I'm not keen on their way of life personally (I'd really miss my dad and fianc? if it were RL lol, and miss having a family connection) but it could work for some, like Bull said Cullen and Cassandra would do great if they didn't die fighting the invasion, those two love rules.
Perhaps, it would be pretty cool to fight in an invasion. More about the old elven culture would also be good, I'm not sure if the elves will ever rise in this game though as Bioware seem to want them to be the eternal underdogs. But a new Kingdom of elves would rock as I love them, I always play an elf in games (except in ESO on PC, I played an imperial in the Aldmeri Dominion).
Yes I don't think will be seeing him/her again, I read they didn't thing a voiced NPC would work for the Hero

. But the Hero was looking for a cure (if they lived) you got a little side mission to contact them and their letter said they were following leads. My Mage Hero was mistress to King Alister and I always hoped to save them.