So I've seen all the arguments over doing a clone wars themed expansion, and a full Clone wars era expansion is super unlikely, but there are alternatives. FFG has surprised us with some of the themes before, well what if we got an expansion based off the concept of 'lost units'. In Rebel's we see an entire Droid control ship that stayed active post war. It'd be easy to base an expansion off the idea of Rebel's finding a lost battlefield from the clone wars, and finding an army of still-active Droids, either commanded by a separatist(keeping them maintained) or a Commander droid. Technically their affilliation would be Scum, so it'd be a campaign with several(or almost all) scum only missions. Make it a small-box, perhaps with 3 Battle droids, 3 Assassin droids, a Droideka, and a advanced tactician droid. It could branch in two ways, with either the Droids managing to contact mercenaries or the empire intersecting the signal and bringing in an extermination unit(and being the real finale). Blisters could be Captain Rex, Magnaguards, and... I'm not sure, any ideas?
This would be one possible way to throw in a Clone wars nod that would actually merge properly into Imperial assualt, and provide an unique scenario that would be a change of pace.

