Maybe there could be an Ultimate Quest at the end of every server...something that requires the prizes of all the quests before it...and at the end of it you get the PW's prize, like a white Graal for Classic, the Bomy Sceptor for G2K1 or something, Sword of the Dark Moon for another server (
), then when you have this token of victory you get a bonus attribute on all the other PWs. Like on each PW, you get another heart for having beaten the Classic series...well okay, that might be a bit much, but something like that?
Beat Classic to get your Bomy to Level 2?
Beat G2K1 to get your Classic Mace to Level 4?