I've finished the class storyline and all my companion storylines. I've completed Ilum, Makeb, Manann, Rishi, Yavin 4, and I'm most of the way through Ziost. I'll have Ziost/RotE finished before starting FE.
What I'm curious about are planetary quests in the vanilla game. Right now, having not yet started FE, I can go back to the old planets and run the planetary arcs/bonus series I haven't finished, with a companion. And I can do the regular one shot planetside quests and exploration quests. And in some my companion will comment. In most my companion will gain influence and approve/disapprove of dialogue choices.
Will they still approve/disapprove/talk in dialogues like this, if I go through FE, get the back, then use the terminal to take them out and run on old planets with them, like say Belsavis?
And will they still gain influence from companion gifts? Will they still be usable for crafting?