I agree that objects should have an AC, HP and some form of hardness (which I think is already implemented since the cave-in at Grymforge is very hard to damage). You shouldn't hit ropes and chains with 100% accuracy when the boulders/pits/whatever they release are often as powerful as insta-kills, like in that encounter with the tomb robbers.
Oh look... 5e has rules for that too. Larian just chose not to implement because gimmicks need to succeed always? :eyeroll:
So a rope would be about AC 11, 5hp. Still very easy to cut. But the cool thing is that higher level characters would do such things much more reliably, while low levels can sometimes miss.
Character development! Making everyone a Legolas level archer from level 1 is, in lack of a better term, dumb.
And it's
more fun when you succeed, if it's also possible to fail.
