Forget 3d all it does is complicate things. All they need is some nice 2d sprites that are better than guilty gear X2. (if you dont know it look it up lol) What they need is to make sure its a balanced enough game. 3D visuals arent important.
And ofcourse they have to stay close to their original formula somewhat or else they'll just alienate the people who played it in the first place.







