Something dawned on me when I was going to do a review of "D.O.A.5 Ultimate".
The extra content that was available from the regular D.O.A.5 was nice but it felt as though something was missing.
Then It dawned on me that I wanted to play a traditional story mode and learn more about a single character at a time rather than try to master all of the fighters in one big tale.
I think that an unlockable mode would have satisfied that itch.
Plus?
Include the previous tales of the character each time you play through.
Same goes for the outfits and the stages.
For returning vets? An H.D. set means nothing (we probably already have the previous titles), But for the new audience? This could clear up quite a few questions.
Plus add a few extra hours of time till completion.

I then Pondered this for all fighting games and the idea is good. Exactly how much space does a fighting game take up anyway?. Besides If Developers already have made the products? Why not use them?

Let me hear your guys ideas.
This could get fun.
Good Luck.
Peace.

orionfoxgibson : True, fighting games aren't that big, it would be great if you have replayable levels from old games or more story into one character. I've never played a real fighting game but I understand your point, this could be great.