Hnrg, me too. She would NOT be happy to be here though. Hehehe. Hee~ I still need to finish reading the manga. ^^;
-Ashton would be ALL over going home. Though maybe awkward to find out he'd be back home and with DRAGONS again. (I have thought about canon-updating him, so he has to deal with that awkward. *so mean*)
-Lockon has no point in going home; unless he can go back to a time where he can take a second shot and, well, not die. XD ALSO, Lacus has to go with him. Or he has to go to her world. This is non-negotiable, and highly unrealistic, so he'd probably just stay.
-Terezi would waffle on it. It depends on what Acumen's "deal" is, and whether or not the other trolls would go, too. She'd feel bad about leaving (most) of them.
-Touma would be ambivalent, but in the end he might think it's the best way for him to get back his memories, so probably go for it. "Oh, sure. Whatever."
-Jeanne .... is actually getting quite attached to Marina, so she'd probably be in the same boat as Lockon (only instead of death she just has court-martial to face).
WHOO, LONG ANSWER.
Same question, but with a twist: If your characters could pick one person to send back to their own home, who would they choose? This would imply leaving your character behind.