The equipment scaling is seriously out of control, especially in the later acts where a single level can have weapons of equivalent rarity shoot up hundreds of damage.
The randomly generated loot was always a weak point of the OS entries; especially since they don't really have an affix system or other interesting and functional generation system for items; though this was mitigated heavily by crafting overshadowing generated equipment for most of the game in OS1/EE.

The exponential equipment scaling is disappointing because it makes gear farming more prominent and monotonous (you have to re-equip yourself more frequently to compete at higher levels), severely damages the value of unique items (uniques are outshined very quickly, especially if you pick them up overlevelled) and makes crafting an unsustainable bore (crafted gear has trouble comparing to generated gear and its next to impossible to supply crafting materials frequently enough).

Overall, enemy stats and equipment/act scaling need to be seriously cut down and polished; but that's the kind of overhaul I expect to see in an overhaul project or an Enhanced Edition re-release, unfortunately.

The Flaws of Divinity: Original Sin II: A list of observations of the game's shortcomings for the community.
Found HERE.