Re: What really grinds my gears.
I mean, in my building, I would LOVE to be able to have our property manager include in everyone's lease agreement that for the 2.4GHz band, that only channels 1,6 and 11 are to be used and only 20MHz is to be selected.
How big is your apartment that you need 2.4GHz?
Anyone "in a building" surely just knocks off the 2.4 entirely and uses 5GHz - faster (both bandwidth & -ac algorithms/MIMO support), less interference, more than enough range to cover kitchen diner, bedroom(s) and bathroom.
Caveats include consumer wireless printers (almost always 2.4GHz) and oddities like Kindles, but in that case you can split the SSIDs (mynet/mynet-2) and lock everything sensible to 5GHz by simply not giving it the key to the 2.4GHz network. The stuff that is 2.4GHz-only usually doesn't need much bandwidth anyway.