system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] What changes would we see in Gotham specifically and in the Justice League if Batman suddenly developed a healing factor that was similar to that of Deadpool?

Peak Batman in his late 30’s/early 40’s just wakes up one morning with none of his old injuries that he’s accumulated over many years as Batman and notices that any and all injuries pretty well heal almost immediately and his aging is also slowed drastically.
gpt
Biggest one would be that he would effectively be immortal.

So that means:

* No expectation or pressure on the Bat-kids to eventually pick up the Bat-Mantle once Bruce gets too old or worn out from being Batman. Bruce will probably be in Gotham for as long as Gotham stands.

* Batman can be immortal, but Bruce Wayne can't... unless he eventually fesses up to being an immortal and maybe Batman as well given enough years. Or invents new civilian identities that still allows him to maintain his resources and presence in Gotham. He can't be Batman 24 hours, 365 days a year though- Bruce being 100% Batman all the time for an extended period is shown to be a pretty bad thing for him and Gotham, especially without a stable support network.

* Bruce will have to accept the fact that he most certainly will have to experience most of his friends and family dying naturally if not pre-maturely, which is probably his biggest fear.

* Bruce won't have to rely on theatrics and subterfuge as much to fight crime. The only reason he'd need to hide in the shadows and be a super crafty fighter in most engagements would just be the psychological warfare aspect since he could pretty much just charge/tank anyone if he wanted to. And that in itself might be a better substitute- people won't need to *assume* Batman is invincible if he is regularly healing bulletholes and hacked off limbs during giant brawls.

* Like Logan, he might have to deal with accumulating psychological fatigue and cynicism if he keeps the Batman thing going for enough decades, and accumulates enough negative traumatic/experiences (such as the everyone dying thing). Even in the standard continuity, that's something he cyclically struggles with after a decade or two of Batmanning. 

* Ra's Al Ghul would probably become super jelly and not obsessed with just trying to pawn off his legacy and daughter to Bruce, but probably will try to capture and harvest Bruce's immortality for himself.