As an idea, the Empire had a tonne of ground based goodies that are memorable and iconic vehicles from OT. I would predict that in the future we will see a new game/scenario where there are land based options .. In which the Rebels have no equivalent.
AT-ATs, AT-STs, womp rats, etc come to mind. A few rebel addons could be snowspeeders and T-16s.
So, perhaps (with consideration to scaling of larger ships) they will give the Empire their larger vehicles in a new arena.
I would buy an expansion with a T-16, womprat and 'pessimistic pilot' card.
But in all honesty, I think we will see a new model ('sabre class patrol cruiser' for example) which will look like a star destroyer but be more suitably sized.
Edited by Conandoodle, 15 May 2014 - 04:13 PM.