I agree with you, though when we played 1e/2e, there was a lot of implied DM fiat.......
You make some good points. I suppose that maybe I have just never saw the additional "codified" (although as a software engineer that word in reference to 3e makes me cringe) rules as real hindrance to DM fiat, rather except for more outlier cases I didn't have to use as much DM fiat to keep the game interesting. But I can see where you are coming from.
I suspect that 'D&D.next' may be a rules heavy game. But I suppose that as long as you are able to raid the dungeon, slay the dragon, steal the gold, and get the girl, the rules don't matter as much.
