Interactions with environment are good - both for combat and exploring.
However, BG3 uses different combat engine, and I don’t think it should straight up adapt D:OS surfaces. Let me explain.
D:OS surface system was really good. RPG combat always revolved around status effects, buffs/debuffs. Having those being visually presented on map with intuitive and visible representation, with clear combos and counter - I think that is a big part of D:OS appeal. BG3 already uses DnD systems - giving it D:OS-like surface effects means adding another set of damage/effects/buffs/debuffs systems on top of existing ones. There are definitely things that can be translated from PnP into more D:OS-like surfaces, but I think Larian needs to be careful here.
I also would question how surfaces work - I read that they work same way as they did in D:OSS - if you stand in them you get hit. That sounds to me, like a bad idea. DND is attribute driven game - whenever your character gets hit, depends on your characters ability to defend/dodge, rather then just their placement. Having surfaces be 100% hit, sounds like something that could break he system and overpower all other mechanics - why make a roll, if you have a guaranteed source of damage?