1. I'd suggest for convenience to allow saving AFTER a hard battle as well. So you don't have to redo it...
7. Some quests require you to steal. And redefining stealing itself, even though hovering over an items says it isn't stealing if it isn't in a dungeon treat it as theft. Only steal when quest requires it otherwise. A heck of a lot of gold is gotten from portraits and gold cups that aren't marked as owned but are in someones home.
As I mentioned in the other thread like this... refuse to use exploits like oil spell to block off fighters from reaching you. Other crowd control spells should be limited if you are limiting other spells.
An interesting limitation I think would be worth trying is to never ever use the rain spell, or water barrels. I.E. no putting out fires except the quest related ones. Some ares I've been through seemed geared toward having fire in play but it is so simple to counter act. Undead fire based healing on fire element... rain now they are weaklings... This could go with other elements as well.