So essentially: Free Advantage based on nothing more than positioning is a massive advantage on par or better than the most powerful magical weapons in the setting?
Yes. Hence the outcry.
It’s not like Larian shouldn’t have known about this. It says in the PHB that if you get advantage on passive abilities it equates to a +5 bonus, which is in line with what Drath says.
They knew. Of course they knew.
Which gives me little hope that we will see any significant changes.