I have to agree with this having just done an evil playthrough and honestly being evil just isn't worth it for the things you lose in the process.

Karlach, Wyll, Halsin, Dammon and a metric crapton of quests and content in general, I'm keeping this spoilers as it'll ruin it for anyone who hasn't got this far and we'd rather avoid that. if you continue being evil in Act 2 that includes siding with the absolutists which means the destruction of last light and possibly Jaheria if you decide to go full on evil only to get sucker punched at the end of the act and end up against the general regardless, we lose a lot for only Minthara as a gain.

As I mentioned above, we lose so much and gain so little so more Minthara content could go along way to helping add some stuff back for the things we lose.