From Larian's post above, it really seems like the resist change was not because the designers felt strongly, but more that they believed their players wanted that change. Which means the vocal "I want a harder game zomg" minority got to ruin some fun builds for everyone else.
That is crap. I'm not going to venture to say who the minority or majority is. There were many thinking the game was too easy. We don't know if there are more it was too easy vs I want massive resistance to the point it heals group. We don't know that.
The game on easy imo either way is just that, easy. And if there is a group that wants to play hard, they should have that to. Imo the resistances the way it were, used as healing and not just blocking damage, to the level it was, I really can't believe people thought that was normal. What other games do you play that have that mechanic?