Perhaps you could try your hand at making an Oddworld 2d MMORPG?
Arxryl made a few Oddworld sprites that could be used for that, you can see them throughout this thread:
http://www.oddworldforums.net/showthread.php?t=14513
I would recommend using RPG Maker VX for such a project, as there are developed scripts for it for diverse battle systems (such as action battle systems, turn-based battle systems, and so on), and scripts for MMO gaming as well. The scripting language also isn't hard, and I can help you by writing code in it.