It's always kinda depressing to have a movie start with all your favorite characters "broken up". I know Hollywood loves it, but man! Can't we find out what all the characters have been doing with themselves without them being isolated from each other?
Sorry. Pet peeve there. :)
It would be pretty amusing if Austin had decided to use a new place as his Batcave. Maybe Mickey works in the nice office in a sedate area, and Austin lives underneath in a maze of twisty little passages in some old gold mine or something..... That could be funny, especially if he had secret passages leading up to the office. Then Mickey honestly wouldn't know where he was at any given moment, because there are miles and miles of places he could be.
Besides, everybody needs their own home accelerator.
Maureen