I would really like to see RadialGradientBrush added. That would be very important for the parallel development for the desktop and Metro. In addition, radial gradients are another core piece of rendering that needs to be part of the framework.
I had a contract for a year producing UserControls under VS2010 for Silverlight applications using Blend4/5. RadialGradientBrush was heavily used and now I'm unemployed and can't produce the same results. Please can you add it to the next Blend Visual Studio release.