Fan Casting Jay Garrick in The Flash 3: Flashpoint

Would appear in a post credits scene and says something like "So, you're the one who screwed around with the timeline in this universe?, lets talk" Scene ends, film ends. Basically because the timeline was essentially messed around with, my idea is that it would reverberate across the multiverse, hence why Jay Garrick has popped up and hence why the Crime Syndicate would be curious about Earth 1 because Johnny quick (in my version of DCU anyway) would get his powers from the Speed Force and able to sense the misuse of the Speed Force as well. Kind of a lead in to a JSA of Earth 2 film, with Ben Affleck reprising his role as Batman (Thomas Wayne or Earth 2 Bruce Wayne)