The concept does need a rethink and it is in the works, can't see any harm in raising suggestions
Unfortunately, too many members were using the Wanted section as a way of offering trades, both in the OP and in responses, and avoiding the fees of the classifieds. It was taking a little too much of the mod team's time to delete offending posts so in the end the temporary solution was to effectively lock all threads. The minority ruined it for the majority, as it always seems to be.
By the way, you are most welcome to post new threads after a 'reasonable' amount of time as was suggested above, however please make sure you let the forum moderator know first so they can delete your old one