Its a small thing, but annoying.

i dynamically add subitems to the tree on expansion.
therefore i do not need to load the whole data on start.

so, on the tree init i just have on the items, that contain children an <ul></ul> to indicate it has children.
that works just as expected.
but when the user clicks on the expand icon, the event treeView.expand does not get fired.

My current workaround is, to add an invisible dummy
<ul><li style="visibility:hidden"></li></ul> to indicate there are subitems.
and when the expand event runs, loading the item, and removing the dummy... 
Thats far from perfect.

It would be nice to have an option to include a distinct list of a columns data appear in the column filter as in the silverlight grid example 

http://demos.telerik.com/silverlight/#GridView/FirstLook

Again, as an option when configuring a grid on a column by column basis. 

Thanks!

Within a short look at Kendo I did not find out whether you support animation for navigating the web UI like it is possible in silverlight or Kendo UI mobile. 
Example: after selecting an item in a list a window from the right side turns in showing some details to the selected row.

Do you / will support similar features?

Add a dropdown text value that can be turned on or off, like "Anytime" or "None Selected".  Or even better allow the programmer to change this value.  One example where it is needed:  In an Air Search on a travel site, there is a time value that can be sent to the reservation systems for finding flights.  It is not mandatory, but it does change the results provided if time is included.  In the current implementation, there is no way for a user to not choose a value.

Because better Documentation and Real World Solutions is in the planned phase, it would be nice if you created a forum specifically for the current users to post their own project code and examples under kendo UI Web.  This forum would be a good place for people to search for real help when the current demos fall short.  Your current forum structure wouldn't allow for posting anywhere but in General Discussions.  The code would be lost in all the discussion posts  if the examples are a mix of widgets, they don't pertain to a specific widget..

Speaking for myself and the rest of the user community, we would be more than happy to upload the work we have been doing.

Like k-textbox and k-button css provided with kendoUI - I would like to have it extended for simple box with title, expand collapse button etc. This may be more like [Group] control in winforms. so we can group the controls and enable/disable it as needed.

I confess that I got surprised after checking Component One "Studio for ASP.NET Wijmo"! They already have super fast controls based on jQuery UI with support for ThemeRoller, and supporting client and server side operations. Why did you decide to go for the client side approach?! Also, the controls work really fast and have nice widgets like differente types of galleries. I hope Telerik decides to go this way with Kendo UI.

TabStrip: Add vertical tabs and activate tab on hover mouse (see the JQuery UI Tools from flow player)

The current set of Kendo DataViz components are pretty nice but it'd be great to have more control over the colors/shading of chart items. This is more important for interactive charts where a user might click on an item, and then a small snippet of code would re-fresh a sibling chart to show more detailed data, etc. Visually you'd want to highlight the currently selected item (similar to the piechart Explode option) with a different color/shade.

Provide us a way to initialize the nodes of a panelbar to expanded\collapsed during kendo initialization instead of after kendo renders it.

One of the important features of any grid based pages is the ability to export the grid data in various formats. It's what is keeping me now from replacing all of the Datatables in my app with Kendo grids.The table Tools plugin for datatables is a great example, providing pdf, csv and excel exports all with aggregates, grouping and basic formatting options. 

I;m hoping the next release has at least csv and/excel exporting options. Please also consider a UI column show/hide feature, again, similar to datables plugins.

I know the Kendo grid will eventually have all of this, but the sooner the better for those of us looking to move projects built with beta products (datatables) with more features to Kendo UI.

Thanks!

It would be nice if either through the framework or the individual widget config settings to be able to identify dependent widgets. For example chain combo boxes or drop downs based on selection (country -->states-->city). Probably auto complete, combos and dropdowns (and list widgets when we have them) would all be much improved with this feature.

Thanks for considering....heck, thanks for asking!

Please consider adding series transitions to charts. Trirand JQ Charts and the new Wijmo charts both have the ability to toggle the series via js. Also, drill down capabilities either via dialogues or linked grids on the same page would be a very handy feature.

Now that the Kindle Fire devices are flying off the virtual shelves, it would be cool to add Silk support for Kindle Fire devices. Not sure how you do that or if it's even possible... just putting it out there.

I do not understand why Telerik is releasing a client-side only version of their controls.  Why are not the ASP.Net Ajax components generate html5 controls like the Kendo UI one? 

I would like the controls that I bought (ASP.Net Ajax) to adapt to the world, this is the reason why we first bought them (to avoid taking care of writing client-side interface over and over again and technology progress).

Please integrate KendoUI to Telerik server controls.

Thanks.

Since now Google started doing it on Gmail, I believe that we'll need even more these features.

Once a theme is created and the css/less code is grabbed, the only way to easily and visually modify the theme later is to input all the old values back into the themebuilder.  It would be nice if there was a way to easily get the values back into the themebuilder from a created theme.  To take a page from jQuery UI, they stick a commented out URL into the theme's CSS that will automatically load the themeroller with all values filled out.  This is extremely handy for modifying themes.

At typical usecase for web applications is to let the user upload and image (portrait, avatar, picutre of real estate etc.) and then resize and crop it to a specific contrain.

An easy widget for handling the cropping and resizing might come handy for many.

There are solution for cropping and also resizing in jquery plugins already, however a successful and pretty combo of the two seems to lack a bit.

Inspiration:
http://deepliquid.com/content/Jcrop.html

I'd love to be able to do fractions in the NumericTextBox

...fractions are numbers too! ;)

Or more flexible:

Allow developers to handle user's click on a DataViz legend item.

And provide the possibility to set/reset the visibility of a DataViz serie not only his opacity.