OK i never knew this until I petitioned a GM last night because I was on an alt and I didnt know where my progress was unlocking the Golden Lotus dailies. His response kind of shocked me. I was on a class I didnt really feel like dropping 2500 gold on for flying because I didnt play it much. I wanted to unlock the Golden Lotus dailies in order to farm cloth at the endless spawn guys in Mistfall village. I didnt know where I abandoned the quest line and after seaching the temple for Anduin and the NPCs for the follow up quests I petitioned. The GM said I had to buy MoP flying in order to unlock the rest of the quests. He even said there were a few other factions that also required flying to do them. While to me gold is meaningless I just found that odd. What if a new player just hi 90 and wanted to do dailies so he can unlock the vendors in order to progress his gear? He did make some gold while leveling but along the way blew it all buying TBC level flying or maybe a few level 90 blues to fill out his gear so he could queue for Heroics. Just seems like a dick move to force him to go out a grind another 2500 gold.
Im just trying to look at this from the perspective of someone who maybe doesnt know all of the gold making secrets yet.