Add a DataContextChanged event
We often need to know when the DataContext on a Framework element has changed. We have the DataContextChanged event in WPF but not Silverlight. This leads to workarounds like the clever MyDataContext Dependency Property in this blog post : http://msmvps.com/blogs/theproblemsolver/archive/2008/12/29/how-to-know-when-the-datacontext-changed-in-your-control.aspx
It would be much better just to have the event in the first place.
It would be great not to have to work around this any more. Never understood why DataContextDependencyProperty is private.
Justin Chase commented
I wish I could add all 10 of my votes to this one :(