I'm not so sure it would be as ground-breaking as you think it may be, especially in the face of complete failure of their plans. I don't doubt its importance to the city elves, but even the Dalish, scattered around the continent as they are, manage to celebreate the Arlathvhen every ten years with little to no real effect when dealing with elven matters.
Organization is the single most important factor in pursuing any goal with a group of people. With it, you may not have a chance. Without it, you have no chance. There is no way for the elves as a group to credibly pursue reforms, let alone fight a war, without it. Since the closest thing the city elves have to a leader at this point is Briala, who is about as connected to the city elf reality as the 1% liberal is to the blue collar worker, building institutions is all but a necessity (and only avoiding that because social failure is an option).
The Dalish do not have organizational unity. They are, by deliberate intent, decentralized and disorganized. For them, it is a survival strategy: if one clan is destroyed, the others remain intact. This serves well in avoiding having a single point of failure- it does not serve them well in maintaining a polity or even a single coherent culture. Each tribe's relations depend on their own immediate neighbors, each tribe's attitudes depends on their specific members, and each tribe's culture varies bit by bit according to what they believe, what relics they have found, and what practices they adhere to. The Dalish are fragmenting, and if given enough time even the idea of a unifying Dalish culture will become as anachronistic as the idea of a single elven culture.
It also doesn't help that the Dalish do not have relations with humans. What community the Dalish have between the tribes is pointless in an effort for social reforms for issues that do not apply to the Dalish. The Dalish problems with humans are quite different than the city elf problems with humans.
But I suppose that the City Elves are truly in desperate need of role models. It was very depressing in the CE Origin that the Alienage kids didn't have even elven heroes to play as.
They used to. Then they became the Dales, followed someone's lead in an isolationist and xenophobic foreign policy that ultimately saw them destroyed, and the Chantry decided to retcon the Chant rather than let them keep Shartan as a symbol. Now the only Thedosian elf hero of note is the Garahel, and possibly the Warden.
So remember kids, losing a race war doesn't just meaning risking losing your lives and liberty. It can also mean losing your history and heroes as well.