Okay we've talked about a lot of this BUUUUUUT! Here are some things we HAVEN'T talked about: I think Herah and Aramis will get along great. She likes artsy, self-assured types.
Personality!Swap Jacob will be suuuper excited by Elise (JtR Jacob will be by far warier). I think Leliana will get along with Elise as well. And Leliana and Hanzo can be competitive archers.
Fareeha and Emily: badass bros? I think so.
Gabi will obviously be O.o about the other world, but she'll be interested in learning more about fighting omnics from the people who lived through it.
Genji and Killian need to have some black market dealings happening~