I never understood the obsession with fighting Sirion no matter what. Personally I like the Elves: they fight a clean war and those of their nobles I've interacted with have seemed much more characteristic of what Fontan should have been than many of those my characters have fought alongside.
It would have been nice if we could have mounted a valiant last-ditch defence of a well-defended city: something epic to underline the tragedy of Fontan's fall. Instead I'm expecting a fairly anaemic battle or two and the majority of nobles slipping away into the darkness.