I'm with Bob, nothing worse than hanging board behind a cross-eyed framer, I mean you'd think they could at least read a tape & a level.

And would it be too much trouble to turn up the pressure on your nailer a bit so the nail heads are actually drove flush. Neglecting to install nailers where needed in corners, closet lids are particularly notorious for this. There's always at least one or two that are left out.
Next would be this lie in mid-Jan, (temp hovering around -15) yeah house is ready to hang and the heat's been on for 2 or 3 days. You arrive to find the front door standing open, oh yeah it snowed last night & there's a drift in the doorway. Go inside and see they stocked it before the insulators were finished so all the board is laying flat on the floor, big sheets for the lids naturally on the bottom of the pile. Oh yeah there's your mud, neatly stacked and frozen solid in place.
Let's see what else, You arrive to find the insulation inspection hasn't been done, so you call GC. He says don't worry he's on the way there now. Inspector shows up, looks around, scribbles out a punch list that reads like a Clancy novel.
Electricians that swear your hangers covered up an outlet box. Got a solution for that one though, I take digital pics of every wall & ceiling before the hanging starts. I just love the dumb looks and shuffling thru plans that start when I show them a pic of the framed wall & there's no box where they're sayin one should be. I'm always nice about it and offer to do the cut-out for them, yeah sure I am. :rolleyes While we're on the subject of electricians, make sure the boxes are mounted properly and securely, same goes for the HVAC & the vents & returns.
GC, it won't be any problem to sheetrock in behind the furnace and hot water heater in the utility room will it? You'd think they'd have thought to hang it before they set the furnace!
GC- Make sure your guys don't damage the kitchen cabinets when they're hangin & finishing the garage. They arrived early so we just stacked them in the garage, most of the time in front of your rock standing against the wall. We live for moving & storage, nothing makes our day like having to stop work & move cabinets, extra siding, interior doors out of the way, especially since it's bid at piece rate.
No hot outlets in the place, you'll have to run 150' of cord thru the mud out to the temp service at the curb.
Those are a few of the reasons I don't bid new construction drywall anymore. Give me a picky home owner any day over a disorganized GC, miss out on all that fun and get paid better. :Thumbs: