Gavin has complained about lack of resources, I made some suggestions further up in this thread, nobody commented on it.
Using coin fees to pay devs was the idea behind DevCoin I believe. I don't see much to that.
As for forum advertising I believe that goes to maintenance of the forum, and paying moderators. You're right there would be some concern about anyone formally paying devs having influential special interests. For that reason a crowd funding model is probably better. We just need to set something up.