Oh, I am quite enjoying it, exploring the Deep is particularly fun. I'm just spoiled by modern automaps
If you'll be updating the way map works, maybe also consider showing the party (or the lead character) position on it?
Another thing I wanted to ask about is the "You're too weary to cast this spell" message. I originally assumed that it means I don't have enough health, but it doesn't always seem to be the case. E.g. my mage can cast Fire Rain at 100% health, this would lower her health to 80%, and then she can't cast it again until fully restored. At the same time, I have no such problem with Repell Undead - she can go all the way down to 30-40% health with it (I didn't risk to spend more).
I would also suggest not allowing casting healing on oneself - it's either pointless (when more health is spent than gained) or gamebreaking (as it makes other healing options pointless).