You know who seems cool? Halsin. Why the hell can't he join because having him would be fantastic. He does not strike me as a whiner or some overbearing ass. Just a strong companion that can kick ass and chew bubblegum.
I expect it's because Druids are not playable yet though I expect Larian will give us Kagda as our Druid companion.
I think Halsin/Drow will be potential secondary companions that will mostly stay in the camp with some role in game mechanic and will join party with some quests.
Kagda seems like nice potential companion with self redemption quest. However, I think they will leave some for Act 2 if we think there will be like 8+ companions. So getting all in Act 1 would be a bit strange.
