I agree. The whole idea of a camp, so you can have a place to go back and flesh out during the course of your adventure is nice. But I'd have rather have it as a true world location where you had to travel. Adding instant travel could have been done with mage spells later on, teleportation circle or something like that.
If it is a camp at the location you are, it would make more sense. That would also allow for easy ambushes. Sleeping in a skeleton invested keep could get you awoken in the middle of the night by an attack. Perhaps a 'watch' mechanic could be implemented aswel.
Making camp in the dungeon with limited stuff and just your current party will be fun and can open to some interesting mechanics like ambushes as you said.
-Selling things to a vendor and after you kill them to get everything back. I know its realistic, but this feels very much like an exploit.
Why selling anything in the first place? Just kill the merchant and get the money if you wish.
