Now that Visual Studio 2010 is available, it would be great to get more feedback on the new Extension Manager feature in this version. This can encompass a lot of things from the installation experience, to the online extension discovery, to the installed extensions and updates, VSIX and MSI support, and more... and anything else you'd like to comment on. If you haven't tried the Extension Manager yet, you can find it in the Tools menu. Launch it, and start discovering extensions to Visual Studio by clicking its Online Gallery tab.
Feel free to comment on this post with your thoughts, feedback, or ideas. Thanks.