I'd like to see the Savitar arc done over. In the history of this post-
Crisis Earth, let's say that Savitar hasn't happened yet. At some point in the future, Barry — the original, not a quantum duplicate — falls back into old habits and travels back in time to the present to fix a mistake that his present-day self is about to make. Barry being Barry, the fix doesn't actually work as intended, so he then has to fix
that, and so on. Much of the action in present-day should be shown from future-Barry's point of view. All the while, present-day Team Flash knows only that there's another speedster in town working against them. Future-Barry wouldn't call himself Savitar; that would be present-day Cisco's name for the mystery speedster.
Future-Barry might prefer not to wear the iconic red costume. He may opt for a stealthy black outfit instead, but I'd be happy as long as it's not Savitar's exaggerated
Shrike suit.