You're right and I like cover, but it won't happen because it would mean redesign all maps. We have to deal with backstab/high ground alone.
I don't think we have any opinions to give about who should play this game or not. That's Larian's job and it looks like they want to please people that don't like missing too often.
Not sure why a +2 bonus would break D&D's balance, but I'll be glad to hear it.
(That's a suggestion I read a lot on forums from D&D players to replace the balance issues of highground/backstab advantages).
