In 5e part of what made the thief class was the ability to use a potion as a bonus action. Now that the ability was given to every one I’d love to see some thing else to beef up the thief.
I wish I had a good option but currently I am not sure. I feel that rogues in general and thief’s especially where hit pretty hard with the nerf bat in Baulders Gate 3.
P.s add expertise.