I thought the combat system as a bit harsh. It was quite humiliating when my character got his kicked by a rat. xD
Maybe instead of just not playing the game for a while so your health can regenerate - perhaps being able to 'sleep' and have your health regenerated(half or fully)? Got really annoying for me when I was either given the choice of not playing it for a few hours or exploring for an unknown amount of time(I'm really unlucky in terms of gold) and getting beat up for the most part, while discovering 30-50gold.
Possibly make the Immortals/Elders a little bit more inclined to grant your wish(took me forever to get someone to teach me some magic), maybe depending on who your master is? Like if your master is Morrigan, maybe Bastet would be more inclined to teach you some stuff? Or your master is Scathach, obviously the Flamels would probably teach you some stuff.
Can't really think of anything else, just those two titbits. I like being able to duel people, though. ^-^
Anyway, just my