So I'm going to pitch an idea, in this what I'm sure is a totally inappropriate forum, because it's just kept seeming cooler and cooler the whole year or so it's been rattling around in my head.
So Sylandar, being the unmatchable hegemonic global superpower in both economic and military terms, has to be despised by pretty much every other nation on the planet. And come on, thousands of Elves must have gotten out over the last few hundred years, whatever Sylandar says.
So here's my idea - there's a France-type ideological Republic out there that despises Sylandar for semi-noble reasons. They've formed a regiment out of ten thousand of the worst, most broken dregs of the Elven exiles from the world over into a La Legion Estanger Elfique. A fifty year hitch gets you a purged past, equal citizenship, and eternal brotherhood with the hardest most fucked up bastards to ever receive elite military training.
"You have joined the Legion to die. We will send you where you can die." - Actual Motto of the French Foreign Legion
Given what's been done to their wives, mothers, sisters, daughters, I'd imagine the Legionnaire's mindset would be common among the males of the disapora. Could serve as a final ideological antagonist for Lin just as victory seems assured.