Presently, widget zoom events are only triggered from the mouse scroll wheel.

Please support zoom via touch input.

Ability to use template apposed to field(s) in dataTextField and dataValueField. This feature will make control more flexible and customizable on client side. 

It will be great if Telerik gives same themes for AJAX and MVC. As new projects are developed using MVC and to match theme to old AJAX project it will be helpful.

When ever if any out-of-box theme is available in AJAX please provide same theme in MVC also.

Thanks

The Globalization cultures contain the zero-based UTC date format "u".
However, when parsing or formatting a date using this "u" format, a wrong date comes out.
The local hours are not offset to the zero-based UTC format. End-users will see a wrong local date parsed from a UTC date,  and a wrong UTC date formatted from a local date.

Please add proper UTC support to Kendo UI.

csv file is much lighter than json. For flat data to be represented in grid layout, need to support this format for grid.

If Kendo tooltip configured closeToHide: true, then the kendo tooltip only hide when the close (x) icon clicked. The tooltip will still appear if user scroll mouse or click at another area on browser.


Currently kendo tooltip will be hide when user scroll mouse or click at another area on browser even if it was already configured autoHide: false

ASP NET MVC provides jquery.validate.unobtrusive validation that, using jQuery validation, let us set validation attributes into model class.
http://weblogs.asp.net/mikaelsoderstrom/archive/2010/10/06/unobtrusive-validation-in-asp-net-mvc-3.aspx
Would be nice if it may work also with kendo ui validation.

Very hard to coloring the icon (only black and white if using sprites). I need to color the icon especially during validation when invalid. And second, I also want standardize icon in my project with glyphicons.

Support row templates in conjunction with frozen / locked columns

Looks are not enough... Performance please !!!


Besides reasonable funcitonality and good html5 looks we really need to start hinking about how to bring this to a new level of performance. Data's getting bigger and bigger but the charting tool hasnt up'ed their level in handleing that data. Please review and increase the cap of how many point a simple bar chart can handle...Example?
try plotting 4k points ( x axis being 0 or 1 and y axis jsut a count from 1 - 4k) using a bar chart. One of them might be reasonable but what if you have 5 of them or more on the same page ? 
Ambitious ? Stupid ? Not needed  ? probably because one doesn't need to deal with that kind of data, but I promise to any analyst that that day will come !!!

When creating an element to make into a dropdown you can add the attribute 'required'. Instead of this it would be better if the external wrapper was made required so the browser has an element it can focus on, rather than erroring when the page is submitted and validated by the browser. 

Add support for intellisense, auto-complete and syntax-highlighting to the editor. This enables the editor to be used for writing code or script. The intellisense and auto-complete rules should be customisable and support Ajax callbacks to populate.

Examples:
CodeMirror: http://codemirror.net
Brackets: https://github.com/adobe/brackets
Cloud9 Editor: http://ace.ajax.org

Where several pie charts are displayed above each other, it would be nice to specify a consistent diameter or max width for the legend (when the legend is displayed to the side) to ensure all the pies line up together. Longer legend items then need to wrap.

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

It would be great if the chart control was able to produce a radar or spider chart, currently we have to use Silverlight to deliver this feature in our solutions. 

Many other libraries provide responsive widget like charts, graphs, Gantt charts, Tables and so on. For the widgets in Kendo that are not responsive, when will that happen?

Within the Grid you can currently either have single-row editing, or batch editing. However, batch editing does not necessarily show the end-user that the Grid is actually editable. In order to make the Grid more intuitive it would be great to have all cells display their edit template constantly to ensure that the client knows they can edit the component.

Additionally, sometimes a user will want to edit more than one row at a time, but not have the entire Grid in edit-mode. Being able to open several items to be edited at once would help with this user interaction.

This is why having multi-row edit, the ability to have multiple rows in edit-mode at once, would be a nice feature to have in a Grid. It would also theoretically open up the ability to have all rows in edit-mode at once.