The walldive loops from ST are probably the reason the Barcelona got so badly nerfed, but even without a nerf they’d be a LOT less effective in SF4.
The existence of 2 seperate wakeup speeds immediately drops the mixups from 50/50 to 75/25 in the defender’s favour, and this is without taking into account FA, backdash, easier reversal window, easier crossover reversal timing.
As for the Ultra, I’d be happy with the old back wall shortcut (:db::df::ub:) being reinstated. This makes the move a lot faster to prep and a lot smoother. If DP and SPD get new, easier shortcuts, it doesn’t make a lot of sense for Vega and Guile to lose their only shortcut.
For the Ultra’s use, I’d not fiddle with it too much. I’d either give it the kind of massive power that the hardest Ultra to land would warrant (instead of being one of the weakest) or allow EX Scarlet to cause float rather than juggle to allow combo’d Ultra and leave the damage low.
Assuming Vega gets one of his old Supers back (personally, I think it’s more likely he’ll get a new Ultra), which would be better would depend on the other.
Red Impact would likely be high damage, so comboable BHC would be better.
Scarlet Mirage should be comboable, so high damage BHC would be better.
Vega doesn’t need a complete rework, he just needs a couple of minor tweaks here and there. All the Scarlet Terror really needs is to have it’s hitbox fixed, right now it whiffs in some really weird places (short/forward miss crouchers, forward/RH don’t hit to the tips of Vega’s feet).
I loved both SFA3 and ST Vegas, but compared to SF4 Vega they weren’t as flamboyant. I just prefer this version, and it’s hard to go back. In hindsight, old Vega was just too conservative compared to the new version, and I think this is the way forward for him. They just need to tweak it a little.