The obvious hook for an evil path would have been Kagha, siding with her because her way of defending the grove didn't involve you fighting your way through a goblin camp.
So apparently this is an option? I have to try it out myself but I have read multiple people's accounts now saying that you can side with Kagha. This makes me wonder if;
- The reminiscence scene on the boat will refer to this as its own option (and not just "you remember their screams as you slaughtered them all" like with the goblins)
- Doing this is possible without inciting a race war (without goblin support this time, making this a harder path than Minthara's)
- It is not a failsafe bug path which is triggered by aggroing the Tiefling faction out of character (from what I've read the "the druids have gone mad! run for your lives!" race war outcome is the most likely)
All in all this sounds like an even worse evil path than that of the goblins because you have to do everything yourself. Helping what is essentially a druid hate group seems like a bad idea anyhow. Not to mention Kagha still potentially kills a child the moment you meet her.