I romanced Cassandra both times lol. I don't like Cope or Solas so I didn't use them. I rarely used Iron Bull either because he was too similar to me. I liked Sera a lot and almost always used her. I switched between Dorian and Viv as my mages. Cassandra was almost always my tank although I liked Blackwall too and would use him once in awhile.

When I fought dragons I often brought in Iron Bull with a dragon rune weapon.

My third play through I was a female Qunari rogue and romanced Sera who is ***.