I am in the process of making all my models rotatable (in anticipation of receiving my B-wing order). So far I have my rebel ships done and one TIE Bomber, the other TIE's require a bit more work - glueing the magnet to the model without flattening the bottom seems to not hold...
During play the bases won't move if you accidently nudge a model (it will just rotate/tilt the model), and when (dis)assembling them before/after play I don't have to put any force on them. Also in storage they neatly stack because of the magnets