wingsandsword
Legend
This in it's own way I see as a problem.I expect that it will be a [current edition] game with no house rules that takes place in a Greyhawk-like world
D&D != Greyhawk. D&D is not a setting, it is a rules system with some genre and setting-related presumptions built in.
Earlier editions presumed you could run a variety of worlds and styles that would all be "D&D", be it asian, seafaring/pirate, pseudo-historic, or even worlds like Dark Sun, Spelljammer, Planescape or Ravenloft which challenged many of what people now assume are inviolate aspects of D&D.
Almost any fantasy game set in a pre-industrial setting that has magic, monsters and adventures is D&D of some kind, if it uses the Player's Handbook (or equivalent, in any edition) as its core. Setting and edition are parameters applied to D&D.
D&D is supposed to be a roleplaying game, the rules are there to help play out your character and the adventures he has, it's not supposed to be a glorified board game where the rules are more important than what is going on in the game setting. If house rules help depict the setting, and especially if they are well documented and well written, then almost any house rule is appropriate.
My D&D games may have a lot of divergence from the established rules in lots of little way (and a few not so little ways), but I'm always very mindful of making sure that my house rules are well documented, every player knows about them, and at the outset of the campaign (or any time there is a substantial change to the rules) discussing it with the group as to what house rules they may have a problem with or would like to propose.