Hmm, using your image that you created, here is an expansion to it based on jsp members that play Ladderslasher and have obtained Guild Points that they can use instead of $$$s.
Hey... Ladderslasher is a game created by D2jsp site owner Paul... so your idea, and using Guild Points from his own game could be more beneficial to increasing players to his game and also helping out with your suggestion.
Just an idea, at least people can earn Guild points and purchase these type of updates without spending real $$$s.