Hey, glad you are enjoying the assets.
I'm currently working on the expansion, with no scheduled release date. I'll be including the 4 direction connectors for walls, animations for monsters, and some extra items.
As for the other things, I'll will be putting some of them on the todo list for the expansion after this one.
Thanks fot the feedback, Cheers!
Edit: Oh, also the expansion I'm working on will include a new monster.