I actually thought the Undead Revenant fights were quite smart and is the kind of fight the game needs more.
It's the kind of fight that force people to be tactical, thinking about what to do instead of just outright using the strongest attack. It has conditions players must notice in order to win and when they do, they have to think of how to achieve it. I ended up setting the first room on fire so a single bless can clear it instead of going for each puddle at a time while keeping the enemies cc'd and weaker so once I bless them after the room is clean, they all die right away.
Even the quests that actually feels fresh, like how they try to implement stealth mission into the vault.
The problem is that they keep forcing you to redo the same kind of fight that the mechanic no longer feels fresh. The game also has almost none of the unique stuff in Act 2 so there's nothing preparing the player for Act 3. Everything else in the game is just "Talk to A, Go to B, look for hidden switch C, do fight with D to fetch E for A, finish" and a shorter or longer variation of that. Only one quest in bloodmoon really get you to try something new based on the text you read that give you the quest.