For me it is not about adherence to some official D&D rules. I just want a good game, the best that can possibly be achieved at this moment in its development. And I am all for game mechanics that make the game fun to play. But please do not let immersion and believability suffer. No matter which rulebook is followed, this is a role playing game, and I have to assume that for many players the depth of their experience depends on the ability to really get into the fantasy world and into the character they are playing. I think that should be a crucial aspect of this game. And not paying enough attention to consistency and logic undermines that. At least it does for me.
