There are a few reasons I feel that would possibly cause yet another rip in this fragile community. First of all, we all know Zygote's Top 10 on TF Clans keeps getting ripped week after week. So say they make 4 TF divisions, thats 24 clans. I can see the harping now. That brings me to another point.
Money is involved now along with prizes.
Cheating accusations, friendships ending, constant bickering, etc. Some probably were, im also sure some might have been simply accused and tossed from the league. DM is a simple game, while TF is more complex and draws more emotion from players. I mean the IGL as an example is probably the most competitive TF league right now, and they have their share of problems, which im sure would be doubled if prizes and money were offered. Just wait till PGL and a clan that wins, lets just start rubbing it in everyone's face when a clan wins a championship title.