You know, I hope the troll origin of elves question is never settled. Because, strangely, one of the harder things to do in a fantasy setting is to keep a sense of mystery about the past.

Mostly because fantasy settings tend to have the gods be real and continuously active in the world, lots of immortal or near-immortal beings hanging around, and, in WoW, even time-travel. So the past often isn't something of historical or archaeological research, but rather just asking someone who was there or going there yourself.

And further, when the creators of a fantasy setting create fiction in the setting (whether it be comics, books, or quest text) it tends to be written as "this is what happened" rather than as the best historical/archaeological guess about what might have happened.

For example, we can assume that the War of the Ancients novels are a more-or-less accurate account of the events of that time (until retcon at least, but that's a different problem). And we can assume that the spirit visions in the alliance questline about the origins of the humans from stunted vykul is what really happened.

But the questions about he elven origins are more like the way real history happens. Different groups have different stories, in some ways similar, in some ways contradictory. And there's not enough truly objective evidence to say conclusively.

So, be careful Blizzard. Keep parts of the past an undiscovered country.