Firstly, I had never heard the expression "kicked into a cooked hat" before and I like it, kudos.
For me BG3 does everything better except for not having shared inventory/encumbrance. That is the one thing I liked better in WOTR.
I think given that BG3 needs to work seamlessly as a single and multiplayer game, and a multiplayer game that supports party members acting adversarially to each other, separate inventories are necessary.
Encumbrance can be a bit annoying, but can you imagine the vitriol that would echo across this forum if characters could carry unlimited explosive barrels at a time?