just doing flash point would have been so much easier and better.
fanfic time - with only 1 big change from the comic
1. flash changes time - wakes up in new timeline
2. pierce brosnan - thomas wayne fights robbie - now yo-yo, cyborg shows up, exposition dump, intro shazam and some other hero/villains from past movies/shows
3. flash goes to see batman, (change from comic) batman tells him, his timeline has evil speedster called zoom that disappeared years ago, bats tells how the war started and show clip of wonderwoman killing amber heard
4. deadshot, bloodsport and flag on boat fight/die to aquaman, black manta, king shark, reveal the atlantean army
5. flash tries to regain powers, end badly
6. amazons have control of europe, WW kills chris pine
7. back to flash, regain powers, bats has one of zoom's old suits.
8. lois info dumb about the invasion, saved by the resistance, lead by peacemaker
9. flash,bat, and cyborg look for superman
10. gather the heroes - plan
11. ww vs aquaman, amazons and atlanteans
11-a. big battle - everyone shows up
11-b. zoom shows up, mad barry's change is erasing him from history, super slowmo fight
11-c. supes comes back, wrecks shop
11-d. bats kills zoom
12. flash undoes the change, goes see batman
only reason for the change to zoom would to be to skip telling his origin and all that, during the fight could reveal, zoom has been living like a god in the future