KOTOR or CW all sound cool, but it probably means a new core set. For skirmish it would definitely works as time period is not an issue but for campaign I don't see that happening (even if time period has been dropped by FFG). There are people around (I once was one of them) who complains the app spawns Wampas on desert tiles, can you imagine how they would react to play against an Empire player (even that terminology would have to change for an new era) or an app that deploys Darth Malak with Emperor Palpatine? Or grant the rebel players Carth Onasi to fight the Royal Guard Champion?
They could definitely release a new core set based on a different era (like X-Wing did with their Force Awakens second core) that would be fully compatible with the original trilogy Core set when it comes to skirmish play. However, for campaign mode, I see it as a new beginning. New stories and new characters based on the time period selected that will most likely not be compatible with the original trilogy stuff. Otherwise, even if not cannon, I suspect the "Mouse" would not approve the mix of eras for campaign mode.
Edited by IanSolo_FFG