I just think that Justice League is coming off an extremely popular Batman film series that almost everyone saw and is generally very well received. Audiances would probably be more put off by not continuing that and restarting with someone completely new who has to restart the whole thing. Of all the names I've heard JGL is the best actor of the bunch and he played a character who was in line to be Batman so it's not a stretch.
I'm sure I read somewhere Nolan will end his story by the 3rd movie, and this Batman is the sole costumed hero in this universe
I hope it stays that way, JLA Batman needs to be more fantastical than Nolan's Batman
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Avatar from What If..? v2 #10: What If Punisher Family Hadn't Been Killed?
Pencils: Rik Levins
Ink: Bob McLeod
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