Theres nothing really special about that bosch sander. If anything Festool should take a look at the Mirka Ceros sander. If anyone has used an air sander like that, knows how comfortably they are to use all day. The Ceros eliminates the big compressor needed to run it and runs alot quieter, with a low profile brushless motor.
Mirka Ceros
Its a pity its not available down here yet, other wise I'd sell my ETS150/5 and get a Ceros.