I think it's more that a lot of people just don't see Larian improving the evil path anytime soon. Particularly with Act I they had all of EA to rewrite it based on the overwhelmingly negative feedback in regards to the whole 'siding with goblins vs siding with grove dilemma' and they didn't. In fact, they removed pretty much the one incentive that it's few supporters pointed to, which was the whole 'learn to master your tadpole and embrace its powers' aspect, which was dropped entirely in the release version.
So yeah, Larian rewriting the Evil path to be not-awful and empty of content, while adding more evil companions/rewriting existing ones would balance things out, but since it's almost certainly not going to happen at this point, it's a real shame that the only way to recruit Minthara is to essentially sign away your opportunity to experience a large swath of the game's content.
