For me there's a lot of things that have to change in order for me to continue playing properly.
I think what they did in WoD regarding is perfect (minus the massive wait) and I hope they continue with this method; I also likely won't stick around if they go back on a totally fair change like this. My view is that convenience is good only if you've earned it; Being handed everything in a MMORPG isn't good. (inb4 lawl u don't get handed mythic gear).
This is all coming from someone that's bored shitless with the game and isn't even subbed: Handing players everything isn't good. Fuck, even in TBC at least the epic flying cost a substantial amount of gold, back then even with just a price tag attached to it, it still meant something and felt rewarding.
I find it incredibly hard to believe that not having flying is what burns people out but they're totally fine with having next to no content on the ground.