I was under the impression you would be given a choice, whether to go forward with KOTFE or remain with the base game. And once you made the choice you could not go back. Kinda like Ziost post devastation. Once you jump to KOTFE, you can't go back again.

Just finished watching the live stream about KotFE and it was eluded to Coruscant (and assumingly Dromund Kaas) being bombed from orbit. What will happen to our Strongholds on these planets? Side note: I'm not necessarily opposed to being unfrozen from carbonite and returning to a more ruinous high-rise apartment.