i am one of the players with over 200 games, just because i have that anount of games does not mean i play them all at once, different players are on at different times of the day, i may have 20 going at one time (if the player's are on line!)
other times, only 2 or 3 players are on line at any one time, so the amount of games cannot make any difference to the server as far as i can work out!
i would be quite happy to pay a higher price for my membership. i have made a donation to help towards this, i have also bought my daughter a membership. but she hardly plays, but the money was sent just the same.. so in my way, i have paid a higher cost for the amount of games i play!
and quite happy about it :)