Years ago on GameReplays.org there was a mentor program for SupCom that worked fairly well to help players improve their game. Each mentor would have 3 mentees, who would submit replays for mentors to watch and comment on. In game training was encouraged but not required, the focus was on reviewing replays. Each mentor would have their own mentor in turn as a sort of reward for helping out lesser skilled players.
If there's enough interest in this I'd like to organize it. We can vary the details, like having fewer mentees, but the basic elements would be what I've written above. So if you'd like to participate let me know and we can get this thing going.