One relatively bigger thing, but im going to throw it in anyway.
The trap house before the Withered gardens basically doesnt serve any purpose.
There is a very easy way around it, and the loot in it doesnt really inspire trudging through its traps. There is plenty of loot around - especially in the gardens behind it and it is much better.
I already said and still think that Withered gardens and undertakers hut should exchange places. It would provide better gameplay and fit the overall narrative of the main story in this area better.
Especially if the easy way around the house was then removed - so the players would actually need to go through it to get to undertakers hut.
A hint in that direction from some NPCs or a mention of it in some journals players are sure to see, like Evelyns and Roberts journals and ledgers would be enough to point in that direction, while warning about the dangerous trapped house that was overrun by undead, etc, etc, etc.
(similar to the blacksmith house undergound tunnels)
Evelyns diary: "...- let that fool play with his experiments in that hut of his. How little he understands..." etc, etc -
Roberts ledger or journal or dialogue (adjustment): "... - why would anyone buy that hut, when no one has been able to go through that cursed house before it? Is doctor looking at the future, getting himself some nice property for a very low price in this crysis? I dont see any end of it myself. Foolish hopes more like... not even the legion has managed to stop the undead. He will need to spend more money on demolishing that accursed old villa before it then on that hut itself thats for sure... if anyone can even do it. Fools, they are all fools. With all this... money.. ah, ill - ill buy myself a way out of this crazy place!"
Source Hunter : "Didnt you say the doctor payed very little for the hut?"
etc, etc -
Withered Gardens should be in the place where the undertakers hut is. It would be a far better position for them, - overlooking the church? A part of the graveyard and the darkness around it?