If Larian thinks missing in a video game is not fun, reduce enemy AC seems to be a better solution than giving everyone easy access to advantages. Because free advantage really cheapens the value of many abilities and spells.
I very much agree with this sentiment (and that of the OP). I think getting a simple bonus to attack while elevated is fine, but giving advantage is too much. 5e removed lots of the fiddly numbers to make combat easier to track, but we don't have to worry about that with a video game, so it's not something to be as concerned about. Advantage is simple to track on the tabletop, but it is also very powerful and shouldn't be handed out to easily. Just being out of reach is a great reason to find the higher ground - it doesn't need to grant advantage.
