Iirc, you can talk about Brawl Link in the Brawl Link forum. Nothing really changes in the case of this clan. I mean, you've already joined the forum for the purpose of discussing various things, of which have been narrowed down by providing specific forums. I don't see how a clan makes getting better "quicker," unless you were going to exclude information and help from those who aren't members of the clan, which wouldn't be much of a move.
edit: and if you really wanted to solve the issue of everyone asking for matches, it's easier to influence people to collect the IMs of their fellow users, or participate more often in IRC, where just about the only thing that goes down are people asking for matches.