the main problem about your choice being wiped away was because of broken steel DLC allowing you to play infinitely longer then anticipated. A lot of your choices do matter but only to the player really they don't really matter in the game world besides maybe disarming the Atom bomb in megaton or blowing it up or enslaving people for money which seem to effect the game world in a few ways. but not enough. i didn't really have a problem with the mutants in fallout 3, sure they aren't as developed as the west coast mutants but that's kind of the point. their dumb-dumbs gen 2 super mutants or whatever made/bred in a vault. Though somehow they have the concept to "make more" rather then being a dying breed which i thought would of been better but oh well. the Fatman? It's just a weapon in the game to fight behemoths with. i don't see a problem here. You can still enjoy the game, exploration, weapons, etc. I feel like the whole no iron sights debate is silly, your a kid who just left the vault so you wouldn't know how to properly use a weapons that are heavier then a bb gun. so shooting will of course be far more difficult. "it's a fucking shooter" well yeah so is new vegas. their all shooters in one way or another. doesn't mean their not RPGs though.