City elves live in the Dales; they outnumber the humans, apparently. I don't see why those elves and the Dalish clans couldn't work together to emancipate the kingdom so it can be independent again.
Probably already mentioned and I apologize for bringing it back, but the CE/Dalish dynamic does fascinate me.
Reasons it might work:
1. Us against them/enemy of my enemy is my friend mentality
Reasons it wouldn't work
1. CE are Andrastian and suspicious of mages
2. Dalish at least claim to be the ruling class of the dales, I don't see CE seeding authority to the Dalish
3. Dalish aren't exactly going to give up their keepers
4. Prejudices: Dalish according to the lore look down on CE as weak and to be pitied and as people who are not even true elves. City elves vary between fear and respect of the dalish.
I just don't see the Dalish and CEs being able to work together in a cooperative manner. What I think we will see occur is the CEs have their rebellion and the Dalish proceed down the path indicated in Masked Empire and the two basically occur independent of each other.