My concern at this point, is how WB's inability to let Affleck go will effect Matt Reeves's Batman or his intent on casting who he wants as Bruce Wayne.
What I would be worried about, is if Affleck did want to stay and WB trys to give all these concessions , including placing pressure on Reeves to fit Affleck in or to compromise his vision in order to placate Affleck or keep him on board.
If we have two different Batman's , i.e. Jake G's in one universe and Affleck's in another, then so be as far as I'm concerned. Its wonky , but I could tolerate it.
If WB and Afflecks on again off again relationship baggage begins to hurt the movement or production of the Batman , that's on WB not Affleck.