Overall Warlocks kinda suck if you are looking to do anything other then spam Edlritch Blast. If you do want to do that though, theyre fine..
With all the verticality in bg3 knocking people off ledges makes them better then in the typical pnp game id say unless the DM is actively keeping the verticality in mind. But most ive played with dont.
This all said, its kind of a D&D problem and not a Larian problem. I think their interpretation of the Warlock is actually done quite nicely.
