My idea for Crusade is one I don't see often, but does have potential.
I'm thinking of making Crusade an Open-Source Smash Bros. fangame, similar to M.U.G.E.N. That way, people can add all types of characters, no matter how insane. The same can go for stages, menu layouts etc. I understand this could lead to alot of imbalanced and crazy character, but all you have to do is just not download them.
Basically, the Crusade team would make a tool similar to M.U.G.E.N.'s Fighter Factory. It would allow the user to create their own characters and stages with enough time and effort, and eventually export them into the .BIN files.
What do you think?