Could maybe make the test/problems forum into For Sale, tests, problems and suggestions. A sort of 'everything else' forum. I don't think we'd have enough stuff to sell or suggestions to warrant whole new bits for them.
Alternatively, just a single sticky thread in announcements for suggestions to be put into for discussion by the top bods and then just add for sale to the test/problem forum.
Orrrrr....... if people have suggestions, just PM one of the admins and we'll put it for discussion in our top secret forum where we talk about all of you behind your backs anyway