I want to have more options for tooltips that work like facebook's tooltips - you get a box, a strip at the bottom w/ buttons. I would like this for the modal windows as well as any tooltip/menu item. 

Some sort of scaffolding for adding buttons to a flyout window component.

Multi-column Headers like the asp.net ajax grid 

http://www.telerik.com/products/aspnet-ajax/grid.aspx

Placeholder is supported for numeric text boxes, it would be nice if placeholder could also be supporter for all text box input, i.e. plain text.

some time we need to looking up in folder 
On telerik ASP.NET is call FileManager
We just need function like :http://elfinder.org/

Thanks

The Switch element is styled after the iOS 4 and earlier rounded rectangle instead of the round switch used in iOS 5 and later.

It's certainly possible to do this newer style using css/js as well and it would help apps built with KendoUI from diverging from the controls used in the rest of the OS.

http://css3wizardry.com/2011/12/18/ios-5-style-switch-control/

...similar to a detail template, I'd like to be able to nest a Kendo grid of child records in single cell of a parent row.

the baseUnit option is great; it offers us minutes, hours, days, months, years.. but not weeks. I would like to see an option to break down the granularity in weekly format.

I'd like to suggest the support of animated scrolling for the scrollTo() method of Kendo UI mobile scroller

Hi,  It would be better to change grid slightly to accept dynamically changing automatically 

Have a way to remove padding from the Kendo Chart. For asthetic purposes some charts need to fill the entire area. Currently all of our area charts just have a straight line that comes up out of the x-axis and it looks like garbage. we need a way to remove the space from where the chart area starts and stops and where the actual area chart is contained. It should also be noted that both high charts and jqueryui charts can do this. Most people purchase kendo so they can have a consistent toolset.

HTML input of type file has a "false" default value for multiple whereas KendoUI has it set to true. In addition, KendoUI ignores multiple attribute in input definition while it uses it for the emitted HTML.

Currently only an array of page size integers can be set in the pageable.pageSizes property. It would be really great to have an option for adding "All" within the dropdown somehow.

Developers these days are spoiled with choice when it comes to selecting an MV* framework for structuring and organizing their JavaScript web apps. 

To help solve this problem, www.todomvc.com offers the same Todo application implemented using MV* concepts in most of the popular JavaScript MV* frameworks of today EXCEPT OF Kendou UI...

Didn't found Icenium UserVoice, so i am posting this here.

Support for third party plugis for PhoneGap (Which are JavaScript wrapper and Native code (Java/Objective C) for the targeted platform)

For example, if a user wants to use native Facebook login in his hybrid application, he has to use this plugin - https://github.com/davejohnson/phonegap-plugin-facebook-connect which requires some tweaks in the native code.

Without phonegap plugins, Icenium will fall behind the standart dev stack.

Have the opportunity during the reporting grid columns to add or hide visible property. This then avoids calling the function hideColumn.

By default the column is visible.

Hi,

some of date and time patterns defined for cs and cs-CZ cultures are wrong. The correct patterns are:

d: "d. M. yyyy",
g: "d. M. yyyy H:mm",
G: "d. M. yyyy H:mm:ss"

(dots are followed by spaces)

Adding a SortExpression property to the columns including template and bound column types would enable users to sort on template columns and override the default sort for bound columns.

Integrate with breeze.js (www.breezejs.com/). Kendo UI needs better change tracking capabilities and unit of work support and automatic fix-up of navigation properties. Kendo UI's DataSource only deals with entities of a single type. Kendo UI's ObservableObject tracks whether an object is new or dirty, but not whether an object is deleted or detached. On removing items from Kendo UI's ObservableArray, items are not marked as deleted. Etc.. Breeze.js' entity manager deals with entities of all types, tracking their changes, fixing up their navigation properties, and submitting their changes in a single unit of work.

Build a Kendo Pie chart with long label names in the legend.
Hover the chart close to the legend - if the area around the chart is too crowded with legend labels the tooltips (supposed to be displayed in that area) are actually placed very far from the chart, leaving the chart container.
Maybe it would be beneficial to replace the absolutely positioned tooltip <div> with an svg representation.