I feel like there should be a forum category called "Visual Studio Extensibility" and under that there should be some forums like: 1. General - To discuss about Macros , Add-Ins 2. Language Service 3. DSL Tools 4. Shell
As It gives more scope and separation for the discussion.
hmm. Interesting. All i can tell you is get in contact with an Admin or a moderator on MSDN and make a request. If there is stuff that is essential and missing i am sure they will find some room for it.