Okay, I’ve experimented with your technique further, and I guess we’re still miscommunicating. Both mouse buttons + autorun key = fly in a straight line, yes. But it doesn’t autolevel my bird. It still seems to require that I attempt to manually level myself, which I can’t do perfectly without some sort of crosshairs. I can get close, but a 2° angle either way still has me ascending or descending, albeit very gradually.
I got it on my first wish. I think the cooldown should be over today, so I’ll see what I get on my second wish 
Very late last night I achieved Fo’ Grizzle my Shizzle (complete 85 quests in Grizzly Hills). I had thought I was completely stuck, because I’d done all the quests and chains out of Amberpine Lodge, the Westfall Brigade Encampment, a couple other quest chains including defeating Ursoc the Bear God last night (though I apparently got some help from a couple Horde on that one - when I entered Ursoc’s lair with the NPC druid, there was a tauren and a blood elf just waiting off to one side, Once I had engaged Ursoc, they joined in, and once Ursoc was dead it looks like one of them used the Vordrassil Ashes on the corpse to release his spirit. I didn’t have to use my ashes at all, so it looks like participating in the kill and being present when his spirit was released was enough to get me credit for completing the quest, despite the fact that I wasn’t in a party with the person who used the ashes).
The other quest in my log was Hour of the Worg. I was able to solo the first three elites, but then I had to face the Shade of Arugal. I was doing all right with him until he started summoning a swarm of worgen on top of me. So that quest still isn’t finished. I had also gone through that whole quest chain that starts with the caged troll, except for the final quest to cleanse Drak’Tharon, which I abandoned some time ago intending to pick it up again later, but then couldn’t figure out how to get it back.
All that left me sitting at 80/85 quests completed, so I finally resorted to WowWiki, which allowed me to finally locate some questgivers I hadn’t already encountered: little Emily and her level 68 pet rabbit, Mr. Floppy, and a couple dwarves over by the Drakil’jin Ruins.
And I only have 99 quests to go for Loremaster of Eastern Kingdoms
(However, I need 460 more quests for Loremaster of Kalimdor …)