Yes, let us please get rid of awkward NPC Batman. Also that gives mine somewhere to live as long as he can get Alfred on board with the whole *I must take over the role of the local Batman so that we do not appear weak to the criminal elements* thing.
I would be up for the above, esp. if Batman keeps leaving as soon as the situation looks under control because if he keeps disappearing then it'll be a while before things get straightened out and also that means I don't have to get intensely involved in any one log.