Z'rell is
Nere is the most pathetic character in the whole game. There are so many more interesting candidates for evil playthroughs, like Z'rell, Balthazar, even Gortash, if you agree to work with him.
Nere is just such a whiny and weak character. Heck, even if the reasoning is 'Want hot drow' there is still the drow crew near the Spectator, that are tied to Grymforge.
Both Balthazar and Gortash literally send you to do their dirty work. THere is no way they would camp with you and fight side by side you.
Z'rell is interesting as she's half-orc. I could see her be devastated by Moonrise Tower being wiped and open to joining you. But I don't really see anything she's give us especially in terms of intersting dynamics for the crew as whole. Minthara would most likely just kill her, or die trying. As her motives would be 'She sent me to death.' With Nere their rivalty would have more depth due to how drow society is.
"He who was" sounds as an interesting choice, I do agree on that. I could see him join Dark Urge, but not regular evil Tav. I feel like his reason to join would be even more shallow than Nere's (or Halsin's)
