No guild perks.
Experience is scaled down to original rate for each area.
Mounts @ 40. Epic @ 60. Flying @ 90.
No flying in Northrend, Azeroth/Kalimdor, Outlands, or Pandaria until 90.
Gold rates for mounts are scaled back up to original prices.
No LFR/LFD. No CRZ.
No name changes, faction changes, or race changes allowed.
P.S.: Deepholm would allow flying (it's not Azeroth or Kalimdor or any of the other continents last time I checked) and the quests or two in Uldum that require you to fly would be tweaked to allow you to complete the quest (temporary flying, magical wings, who knows.)