Its funny you suggest less categories but ask for a new one...
I think we have a good setup. The "Forum" link has 5 main categories:
News
Clubs, Societies and Events
Instruction
Discussion
Resources
Then several sub-categories under them. You should be able to find exactly what you want.
The "Resources" section has a subcategory where you can setup for others to meet in your area. We just had the first GTO meeting last summer (Events section). It was a great success. We were looking for others to join in for the States version, but maybe next year.
The swap-shop section would be a good addition. Good idea.