Finally had time to watch the gameplay. Doesn't look good like BG1/2 BUT at the same time looks better than what modern bioware would do to BG. I will probably purchase the game. The visuals are "dosized" but that is it.
The unique problem is this attacks with 99% of chance to hit. Looks like they are rolling the dice 3 times and picking the higher value...
https://youtu.be/7bRyG5WpIMY
That's the Advantage / Disadvantage mechanic from DnD 5E. Shooting at foes when you are at a higher altitude gives you Advantage, meaning you actually roll TWO D20s and pick the best result. There's even a Feat called Elven Accuracy, which gives you three dices when you have Advantage, so your guess is not far off.
I'm honestly not worried about the mechanics, as it seems they were directly ripped off from the tabletop (good thing aswell), but rather the writing and the fact that Larian is advertising their brand of "humour". Akin to capeshit, having a joke every three phrases makes something LESS funny, not more.