Loving the map so far! Playing with a friend and we're 20ish right now..
Few improvements (or suggestions) I have in mind:
- Aggro: Some kind of aggro bar would be nice, and also tanking seems to be a little hard in our experience, kinda hard to hold aggro. My buddy is playing sword and board and can't seem to hold aggro very easily with me healing him, though Protective Shield -spell has made it a lot easier now that I've got it.
- Unlearning spells/skills: It doesn't seem to grant back the Skill Points. I don't know if this is intended or not. It should either not grant them back and cost no gold (as it does right now, which seems pretty useless to me) or it should grant the Skill Points back, but should cost gold. This doesn't matter that much if you choose your spells/skills carefully, meaning you have already tried the spells and you know that they're good
- Healing: It's nothing major, but some sort of health bars for party members would be nice. It's not that hard to see your friend's health, but it could be easier to see it in case of large pack of angry beasts is surrounding him. Easier to target with heals wouldn't be such a bad thing either

Haven't played any new maps in a while but IIRC TKoK had such feature.
- Spells with cast time: It seems rather weird that you lose mana and begin spell cooldown when you start to cast the spell instead of after the spell is successfully casted. Sometimes I tend to move while casting a heal, because I realize there's no point to heal yet and still I lose mana and the spell goes on cooldown

(I don't if that's intended or not)
That's all I have in mind right now, but I'll post more suggestions as I think of them!
PS. 5/5
PSS. Hope you're not done with the map!
EDIT: Added more suggestions