To Starshine:

Huh, Did not know that PoE2 had that. Sounds like an interesting system. Sounds more fun than the hireling variant if I am honest.

And on the Kagha point, I think it would work if you go one specific route. If you discover the Shadow druid plot and confront her about it, you can succeed on a persuasion to make her realize the error of her choice, having her join you for the fight and stopping the ritual afterward. I do think it would work in the long run, especially since it would make for one heck of a drama potential between her and the MC over the game.

I'm also 100% down for Nere and Vicona. The game could use a few more pure evil companions.

To the rest:

Barcus, yes please. I wonder what class he would be through? What do you all think? Sorcerer maybe, or rogue?