Hell, the year is almost half over. They'll come out with more games before Christmas and be charging for online play before the needles have fallen off the tree.
Most sports games are going to be played by 2-4 people. I wouldn't pay extra to have that server hosted over broadband, it would not improve the quality of play.
Ultimately, the question comes down to this. Will the market bear a model where, the more games you play, the more you pay? Personally, I believe the long-term success of online console gaming will only happen with a single flat-rate model that covers most games across multiple publishers...