Why wouldn't you want a teleport move for him?
If you want him to have a cool teleport move, that's fine. I'd just want that move to be assigned to gear and banned from tournament and ranked play.
In fighting games that are played on a competitive level, developers have to sacrifice some cool powers and abilities that will make a small number of the cast much better than the others. If you don't, less characters are played competitively, which means dissatisfaction among players and less variety among characters on stream. So ultimately, it leads to a game that isn't fun to watch OR play, for the majority of fighting game fans.
I never played IGAU seriously and the INJ2 BETA was closed so take what I say with a teaspoon of salt. But, as far as I know, Batman is a very strong character that doesn't need a teleport move. Those kinds of mobility tools can be overpowered, especially when the majority of the cast don't have the same options.
Again, Gear specific, non-competitive mode: have a blast and let him teleport around as you like. In a competitive mode I can see a very slow teleport, with bad recovery working alright, but it would be so bad that it wouldn't be used that much. So, it's best to just leave it out entirely.