The new party system is great. The guaranteed prison levels really work. The new hero spawns with mere three health though, which in later levels means they pretty much die a few turns later.
Here are some other issues:
The fire rod cannot target an empty space (for instance a gap between two groups of monsters)
The floor shouldn't automatically change when there are no more monsters present as there might still be some treasure laying around. The floor should only advance if there are just doors and chests left with no keys.
The "Choose a spell" text gets stuck to the left panel if you cancel the spell selection by clicking outside of the spellbook.
The potions are a good idea, but there are a few problems with the implementation:
- Stolen potions are not shown as an icon on the Scrounger, while other items are.
- There should be a way to drink potions on the spot. It's really annoying to have to drop a multi-use item just to use a single-use item.
And here's the major one:
The hero turn counter can get stuck meaning you only get to use one hero even if you have two or three in your party. Usually this happens only for a few turns, but once I had my knight frozen for dozens of turns until my adventurer died at which point the knight got a turn again. Later, in the same run, I rescued a new adventurer at which point he got stuck and I only got to use the knight. As far as I know this didn't happen in 0.82.