You had explosions. I would like to systematically blow something up. Then run away with a timer. Lots of people would hate this, but I kind of like this idiocy.
I also would like some ridiculous quests, or even insane quests, things like quest for the cheese, or other retrieval quests.
There are no riddles in your game. I wouldn't mind a riddling contest where you pay to answer random riddles.
It might be fun to poison someone, or poison a well.
I, too, would have liked to pick up the occassonal powder-filled barrel and set it off at another spot. They (barrels) could be real heavy like crucible one was in Book 1 and you had to decide whether it was worth it, or it was part of a quest to blow something up..like a Goblin dike built to stop water flowing to a village of humans. You have to blow up the dike with powder to get the water flowing again so they/crops don't die of thirst.
I don't especially care for riddles, they're too hard for this ol' brain to fathom
The poison a well one could be a quest for the bad guys. And the good guys have to unpoison it. Or,..The well is an ordinary one. A quest makes it magical, ie. able to drink the water and get hit points back or mana back. And the bad guys want it poisoned so the magic won't work. An item has to be dropped inside to make it magical..perhaps on a deadline? If the deadline goes by the well is poisoned and magic won't work if item dropped down later.
No opened ended quests like the one in Book 1 where you find out the potion you thought was ment to help didn't and you could use your own magic to help. And the fact that priest never got punished (unless you kill him off yourself). I'd have liked to try and come back and heal the guy or find him dead (heh, so I could loot his chest).