Add support for drawing box plots (aka box-and-hiskers).  Include capability to display outliers.

I sugest new callbacks in scrollview, like before and after callbacks, to made easy create new behaviors, like a carousel with a previous and next buttons.

And update the change callback, when I used the function scrollTo, the change callback isn`t been called.

Allow pinch to zoom images to start zoomed out.  The "pinch to zoom" feature demonstrated at  http://demos.kendoui.com/mobile/view/zoomable.html is useless for most practical applications.  Go to the camera app on your phone and look at photos you took - they start zoomed out and then you can zoom in on them if desired.  If you had to zoom each one out to look at it, that would be incredibly obnoxious.

I need to be able to bind similar to:

  <%= Html.Telerik().TreeView()
                .Name("TreeView")
                .DragAndDrop(settings => settings
                    .DropTargets(".drop-container")
                )
                .ClientEvents(events => events
                    .OnNodeDrop("onNodeDrop")
                )
                .BindTo(Model, mappings =>
                {
                    mappings.For<Employee>(binding => binding
                            .ItemDataBound((item, employee) =>
                            {
                                item.Text = String.Format("{0} {1}", employee.FirstName, employee.LastName);
                                item.ImageUrl = Url.Content("~/Content/TreeView/Common/contact.png");
                                item.Expanded = true;
                            })
                            .Children(employee => employee.Employees));
                })
                .HtmlAttributes(new { @class = "t-group" })
        %>


and have the functionality of sorting, filtering

Add an Image Properties section to the image manager dialog, similar to the one in RadEditor for ASP.NET AJAX: http://demos.telerik.com/aspnet-ajax/editor/examples/xhtmlvalidatortrackchangesformatcodeblockdialogs/defaultcs.aspx

Telerik has a graphical timepicker control that we're using on desktop applications (WinForms). We'd like something similar for web-apps deployed to our intranet/extranet. The essential features for us are the AM|PM toggle; the display of the 12 hours in several columns and the ability of the developer to define/limit the minutes interval (e.g. 15, 30, 45, 00) in the bottom pane. We are using 15-minute intervals and so the current Kendo dropdown-list timepicker would have to contain 96 items. The Telerik visual approach avoids a long scrolling list:

http://www.telerik.com/products/winforms/editors.aspx#timepicker

Implement screen boundary detection for the depicted widgets and adjust the popup position to be completely shown in the visible area of the browser.

How about a simple addition to zooming, whereby the zoom just automatically zooms into the current data set by filtering off the outer elements? For example, have a zoomStep property, which defines the number of elements to filter off the start and end of the data. This would allow really simple zooming without having to write filters and would allow for easy use in shared code scenarios (eg, we have a single Knockout custom binding for all our charts).

Currently the Kendo AutoComplete can show more than one piece of data in the drop down when you define the template accordingly. The downside is that you can't have header to describe each piece of information.

When many columns still visible in the grid, but not in the columnMenu, the last columnMenu entry is disabled rather than checking it is the last grid column. 
The method to avoid this is to wait using a timeout() and re-enable all checkboxes in the DOM after the click event, which is not sensitive to which grid the event is occurring as the columnMenu is outside the grid element.

It will be good to make Switch for check box, and some radio button type control available for Web just like you have for Mobile.

I have a bar chart for which I wish to show the pointer cursor when hovering over the bars on the chart.  When moving off the bars in the chart the cursor should return to the standard arrow pointer.  I noticed that the cursor turned into the text cursor when hovering over the axis labels (left, right, and bottom) and on the legend.  So in addition to the above I would like the cursor to remain the standard cursor (arrow) when hovering over the axis labels and legend (since you cannot edit these).  I would also like the cursor to switch to the pointer cursor when hovering over the x-axis (bottom) labels.  

The reason for showing the pointer cursor for the bars and the x-axis label is to clue the user in that he can click on this area to show additional "driill-down" chart(s) when the particular bar or x-axis label is clicked. 

In window widget I create links and buttons. On pc system it's work correct. But on mobile devices (just like iPad or Nexus 7), these click events is so hard to touch. Other click events outside the window widget is easy to click(the same links or the same buttons).

At present there is no method in the grid's public API to insert an item (i.e. fully populated new row) into the grid programmatically, that is, as distinct from visual edit mode using addRow().  

There are methods to update the dataItem, and to remove an item, but no counterpart method to add an item exists. 

There are many use cases for this method; for one possible use case, please see this thread:

http://www.kendoui.com/forums/ui/grid/how-to-append-a-row-programmatically-not-in-edit-mode.aspx#2442552

For my purposes, it would be optimal if the requested addItem() method did not destroy the UI state of expanded/collapsed groups.

After it has been inserted, the item needs to behave exactly like all of the other rows in the grid: it should be "observed"; it should have a data-UID; it should have a corresponding dataItem; be included in grouping, sorting, filtering, etc etc.

Your Silverlight editor includes the ability to embed images directly into the rich text field.  This is a highly desirable quality for the rich text editor.  This way, users don't need access to a web server in order to upload images.  This functionality will make the add-on much easier to distribute to end user companies.

Add the ability to output the text from the Kendo rich text editor in HTML, XAML, Rich Text or flat text.  

Could you please supply Kendo Mobile with two Android themes - black and white. Currently, default iPhone and Android themes are absolutely different, so it requires a big effort to build an application optimized for both iPhone and Android, because you need to optimize colors in you own controls. If you build white Android theme which has  more in common with iPhone theme, it will eliminate the problem.

KendoUI Grid is awesome!  Everyone who have used it before knows this.  It's true usefulness is when it is paired with server-side paging/filtering/sorting/etc.  

It's power can further be enhanced if it was paired with ElasticSearch to allow for searching and stuff like that.  I'd love to see something that can interface with Elastic Search from the KendoUI team.  Currently we made it ourselves, but it's a huge pain and very hacky.  

Smart Input.  iOs in facetime has an input that has onBlurEmpty, onBlureChange , onFocus events.  It also manages the style of the state.  It has a bound clear input button that send the caret to the beginning, while showing the preset value . It also has a preset value that is in a different style.

With this widget you can make passive calls to the database for CRUD stuff.  

Look at the contact section in FaceTime.

I think as we try to create more RIA with HTML5, having multi column dropdown is very intuitive 

Similar example:
http://demos.devexpress.com/aspxeditorsdemos/ASPxComboBox/LargeDataSource.aspx