Ground mounts need some serious upgrades!

[Ferocious]

I still have tons of quests on all the maps I've unlocked flying in

If you have tons of quests remaining, then you went out of your way to unlock flying before continuing with quests. Aether currents are located all over the zone, that means they're in spots with higher level mobs that you reach at the *end* of questlines. You could be using a guide or spamming compass instead of focusing on quests.

But through a normal questing method, you discover a zone completely at the end of questlines and that's when you pretty much unlock all aether currents. Quest priority is what I do and I hardly had any quests remaining when I unlocked flying.