If we were to do trading, I think that we should put a defined cap on it. Maybe 3 trades per season, no trades from last 2 weeks (maybe even last month of the season) of the regular season to the end of the playoffs. All trades can only involve one player from each team and/or cash. Admins check to make sure that they aren't the same person controlling 2 teams, the market values and salaries of both players, and the division that each team is in. Maybe it could include a mechanism like scrimmages where you cannot make a trade during a certain time each week.