Nevertheles i hope we stop with this over usage of flying stuff in Bg3 as i've seen 4 gamplays and in each there was at least one enemy flying from a cliff or tower .
D:OS1&2 appeal is moving status effects out of character sheet into the battlefield. While it won’t be quite the same for BG3 it seems they want to keep that part of intuitive interactivity - and they seem to latch to advantage that comes with higher ground. And they seem to provide quite a few tools to manipulate positions - push, jump, spells etc. Some of those do look rather silly.
I don’t see why wizard couldn’t jump. He should have better jumping capability then warrior in heavy armor with shield and sword. Still, I would hope for jump to be tied to skills - like acrobatics or athletics.