I'm not really interested in the casual market at all with fighting games.
My post was from the perspective of someone that actually wants to seek out and learn games. Why are 2D games so much more popular than 3D at tournaments?
So basically what I take from this is that I mistook my personal familiarity with 2D fundamentals as intuitiveness.(being able to press buttons and discern their utility quickly) From this it seems like 3D games have a very basic fundamental flow and universal tool logic/utility as well. I just didn't know about it.
So that throws my idea out the window.
Tekken was really popular once. Its popularity died out this gen my belief is the game grew too large for players for digest, a combination of too many characters * too much effort to learn character-specific-stuff * huge execution barriers. What makes Tekken a great game is still there, it's just hidden behind a lot of stuff.
The big test for Tekken is going to come with their next mainline game, as they have to make some big SF2-SF3 type changes, it's going to be hard to have Tekken veterans accept those changes.