Hi there.
I have played the "Maharajah Chess" in this site for the first time and I dont know if there are some enthusiast here but playing as white is a bit boring.
Nevertheless I remember we used to play a more interesting chess variant (in my opinion) called: "Monster chess".
'm not sure if it is possible to suggest new games for the site, if thats the case my vote goes to it.
Here is a link in wikipedia about the game:
http://en.wikipedia.org/wiki/Monster_chess
Enjoy the games.

Modified to fix link