Hi Billy Jacobs,
We are currently working on improved arrow key navigation that will introduce more consistent user experience and we hope that the problems that you have reported in bullets 1 and 2 will be a thing of the past.
Unfortunately I was unable to reproduce the problem that you have reported in bullet 3. I guess the XAML code is not enough. The TextExpander control might be the key to solving this problem. Could you send us a sample application that we can use to reproduce the problem?
the Telerik team