SSB64 should go into the Nintendo 64.
A larger community only means that there is more drama. The proportion of people who are going to start things and such is relatively the same, but you hear about it more in larger communities because there are a larger number of people, rather than a larger percentage of people, engaging in the activity.
Growth of the community should never be bad. The idea of presenting the community in a good way is so that it can grow. The addition of other people in no way threatens the bonds and community that already exists. If there are problems in the community, they will become more apparent, but otherwise the original community can stay in tact, even if there is a larger community around it.
Collusion itself is not the problem, but rather the results from collusion. If GF is relatively even, then collusion will reduce pressure and can allow players who perform subpar under high stakes to give the best games possible. However, the idea that "it doesn't matter" at that point is prominent. If that is the prevailing mindset of the top players, then by all means collusion needs to be stopped. As long as the players still try to win, which they for reputation or other reasons, then discreet collusion doesn't present a problem. When GF is one-sided, the one who has the projected advantage doesn't have a real reason to agree to collusion.