in my private dealings with seble, I told him that the lack of suitable recruits would put pressure on recruiting, which already was the most flawed part of the game. He has admitted there is some collusion going on that it would be near impossible to police it all, so any that goes on gives those colluding a huge edge. Second, there are several forms of implied collusion - i.e. not outright cheating, yet ....
1 - I'll start, my son plays in some d1 worlds, part of the time, very sporadically, such that I could not tell you what worlds he has at any given moment, yet every once in a while, when I start looking for bargain players late, I see his name on my sorts, I would never consider taking the recruit from him, ever, my guess is other fathers and sons, brothers, friends from the office, etc have the same thing going on
2 - some guys try to not battle conference mates, as they know post season money is one of the keys to long term success, some will even gang up on non conference mates threatening conf mates, this is not orchestrated by sitemail, just by experience, doing what is best for oneself by helping conf mates
3 - when you have 2 accounts in the same world, you are colluding, as you NEVER will compete with yourself, further you are seeing multiple sets of FSS data - sharing info, which helps recruiting enormously, even if it is not used directly
4 - There is the direct drafting and non compete clauses that have been going on in the game since it started. One of my conferences a coach suggested colluding on the CC a few seasons ago, which I have not seen in a while. I still get sitemails off and on asking about my opinion if this coach is doing it, I usually watch, it is not that hard to tell. A few times, if it seems apparent, I have forwarded my thoughts to CS, in general, that seems to help, seems esp seble has a pretty good feel for fixing collusion. I used to get approached a bunch to collude as a young coach, have not in a long time as my position is pretty clear, I don't know if any of you get approached much these days or not.
Finally, when many equal recruits existed, most of this stuff was 'Who Cares', as when someone cheated you, you had multiple options to stay competitive - now, any slight edge gives top d1 coaches an enormous advantage, it has taken some of the fun out of the game for many, many d1 coaches, not all, but many.