9) Set The Stage For Batman Beyond
Representing the much-beloved time of great DC cartoons back in the late 90s to early 2000s, Batman Beyond was a fantastic series in which fans could enjoy having Kevin Conroy’s aging Batman passes the torch to a younger Caped Crusader. With Batfleck’s interpretation being that of a veteran-level, aged Bruce Wayne, it would be quite easy to begin setting the stage for a Batman-Beyond-inspired trilogy.
Now, it’s obviously too early for Batfleck to go into retirement, but if they introduce a Terry McGinnis type early-on, then he can be fully developed and ready to be Batman once Batfleck decides to look for a potential successor.
This is an idea that opens up a strong potential arc for Bruce Wayne, as he learns to stay home at night while a newer, motivated crime-fighter can take up his mantle. Matt Reeves could utilize Batfleck in all his glory, but then by the end of the second movie/beginning of the third, he could force Batman to face the reality of his aging and resign from his night job.
One issue with this is that it wouldn’t be until several films after The Batman that this set-up would be fully realized, but if Reeves showed anything with Apes trilogy, it’s that he can deliver a satisfying character arc across multiple movies.