The main issue I have about the evil path is the fact the goblins turn against you once you helped Minthara destroy the grove. You should be viewed as their champion rather. And yes, at least, give us Minthara as companion.
Another issue is with the hag. If you are so evil, there should be a way to conclude a pact with her of some sort so she can provide help later on in the campaign. I would love to get some redcaps reinforcements like the 3 ogres provide.
Of course, there should be some betrayal between evil characters. But it's too much in our face at the moment.
I liked it, sort of.
I didn't like that there's no good "path to evil" path. No one ever tempts you into the evil path. But I like that the Goblins turn on you. It shows how there's an inner core and "useful idiots", and in order to keep the Goblins in line they claimed to them that you are the "useful idiot"
I agree Minthara should be a possible party character, and I think she might become one. (Reason: Only NPC that becomes naked when you loot her) I hope she becomes a Paladin though, would suit her more than cleric.
But yeah, I like the dark path. I like leaning into the tadpole, and just doing whatever.
One thing to remember: Evil doesn't mean "side with all the evil people", in fact it's very opposite. Evil is generally defined by how self serving, "easy way out". I don't need to side with the Hag. The hag is evil yes, but I'm the only evil in town! To me the evil part is to take the wand at the end.
I would agree if it wasn't D&D. In D&D, alignment is so straightforward and limited that only evil characters may associate with each other. One of the reasons is the fact there are some spells like "Detect evil' or "Protection against evil", which means evil is more a faction than a moral compass.