This was my biggest complaint of VS 2010. It seems like every version the designers get slower and slower.
Agreed. For several of our WinForms projects, we still use VS2008 because the tooling and IDE are much more productive. We'll use VS2012 with ASP.NET applications, but often times have to revert back to VS2010 because something in the VS2012 editor is not working right.
Also not a fan of the washed out looking UI in VS2012. I know they want us to be able to "focus on our content", but I also want to be able to focus on the IDE's tools. I've never had a problem focusing on my content in past releases of Visual Studio. It's strange to me that they thought changing most of the icons to black and white glyphs would improve productivity.