Between Thomas Wayne Batman, the war between Atlantis and Themyscira, Barry Allen’s battle against Reverse-Flash and every other facet of the story, it’s hard to imagine where someone like Jesse Quick could step in without crowding things.
However, if the folks at DC decide that they want to integrate the Flash worlds, then we know at least one Flash TV star will be willing to make the jump.
On the other hand, the odds of such a connection happening anytime soon seem reasonably slim.
All evidence suggests that The Flash’s solo movie will adapt the Flashpoint storyline, and the arc is already incredibly dense without bringing other elements of the DC lore into the equation.