I'd date Estinien. Like, I'm a touch miffed that he never came forward despite being so central to Ala Mhigo's liberation, sincehe basically deus ex machina'd that cannon to bits so the liberation wasn't annihilated. I hope he pops in in 4.x and just makes his affiliation to the Scions more official.

But that's why I think a series of "friendship" quests is the best happy medium for this. We get more personal content with these NPCs we love, but it doesn't jeopardize future storylines, nor does it hurt the current marriage between players system or the open ended nature of the WoL as a character.

The most high friendship would do is change some dialogue options down the road.