Make it easier to change the themes without having to recode all our CSS code. Many of us have already invested a lot of time in custom JQuery UI ThemeRoller themes for our applications. If we had a conversion tool that saved us from all the CSS recoding I would gladly drop UI and switch to Kendo ASAP.
Kendo UI Theme Builder added with v1: http://demos.kendoui.com/themebuilder/index.html
Great idea! We do have plans to introduce a styling tool, similar to the jQuery UI ThemeRoller, which to allow you to customize the look and feel of the Kendo UI Widgets very easily. Since the jQuery UI and Kendo UI styling is based on primitives which are very alike, porting css settings to our widgets should be no-brainer.