I'm not great at modding, though maybe I should edit the .esp so it only removes the main quest, and doesn't actually add anything into the world. I hope there's some utility that can tell between esp strings that remove things and strings that change or add things?
Er, not quite. I think it would be much harder to overhaul the mod than to put up with an extra Jiub or two.
I used this once or twice, and never had the problem that the PES poster mentioned, although I'm sure it could happen. I'd recommend it if you want to role-play being a normal person, because it gives an alternative ending to the MQ story line. There are other mods that make you Nerevarine without having to do the whole thing, but obviously that's not the same thing.
If you want to find other options, just search on Nerevarine on the mod sites.