I think Larian takes his inspiration in WotC´s D&D 5th edition lore and adventures more than in the previous games, at least that´s the impression they gave us until now.
Larian's main inspiration is obviously D:OS 2, which is why they are copy-pasting nearly everything. That said, it is funny how some are now claiming that D:OS 2 is just pretty much just straight up D&D 5E, only in a CRPG form.
Anyway, I wouldn't be surprised if Larian somehow shoehorns in the lame armor and itemization systems from D:OS 2 as well.
