Here is my idea for a Flash trilogy set in the DCEU. (The time travel movie post was based on the report that the movie would be like Back to the Future.) You can tell this is much more character-driven than anything else.
If DC wants to do a soft reboot of the DCEU, (keep certain stories and actors while getting rid of others) then here is how I would do it: Crisis. (A Crisis in DC is a big crossover multiple universes.) The rumor is that DC wants to keep their movies separate (sort of), but crossover potential is still possible, so here's the best option.
What do you think?