I like that this project has included examples of custom controls especially for VS 2005 and VS 2008.
The MultiValueControl is a great example. I just know that I've had issues in the past with having to deploy different versions of the same control for VS 2005 and VS 2008.
I'm hoping that the existing controls can be updated to work with VS 2010.
I'd also like to see some kind of packaging for these controls(makes deployment much easier) along the lines of: http://www.teamsystem.es/post/2008/07/Paquete-de-Check-In-Policies-check-in-policies-pack-v10.aspx