Well, the last seasons that had no relation with the book are the worst ones.
But Larian had an hard challenge ahead. Imagine an monster that can cast Flesh to Stone spell or spell like ability that insta petrify on failed save. An BG fan will see it as "makes sense, is a medusa", but an D:OS2 would probably think that this is an unbalanced broken mechanic.
Actually, Dwarves in DoS2 have a racial ability that petrifies enemies and also does damage, so I do not think that is the case.
