So I have completed a full evil playthrough now, and I gotta say, it was much more fun than I had expected. However, there are still a few issues that I would like to adress. (spoilers, obv.)
Since I killed Halsin the druid, he couldn't give me the information that I would need to go to moonrise towers to get rid of the tadpole. Neither did I find that information anywhere else, or for that matter, anyhing that would definitely lead me into act 2. I might have just missed something, but if that is the case then it should probably be a bit easier to find, cause I really looked (Halsins journal said something about moonrise towers, but I didn't get a quest from that).
Aside from that, I'm confused by another thing: after raiding the grove, Minthara tells me that I have gained new powers granted by the Absolute, but I haven't gotten any. Bug or just a misunderstanding? Because after the horrible thing I just did, something like a reward for playing evil would be fitting, I think (new tadpole powers for instance).
Generally I think playing evil is rewarded, but not enough (and with rewarded I mean not gold but interesting dialogue and such).