@fujifujifujifuji - That's way too much, sounds like Mugen to me and wouldn't be very balanced.
I never really ever been a fan of custom combo style modes like the Hype Drive mode, they usually always end up being very repetitive I think, but at least it's not like Alpha 2 or CvS2 where you keep canceling into the same special over and over.
I'd actually would like to see the return of XI's mechanics, the Quick Shift opened up alot of different possibilities and made team synergy more important.
If not that, then I'd say bring back 98's mode selection, but with some new additions, like maybe a MOTW style mode and a XIII style mode, along with a new Ultimate mode that lets you mix and match you're mobility, defensive and gauge options.