Which faction is most immersive

In Minrathous and when working with Neve, I found Shadow Dragons immersion well done.

My 2nd PT, I played a Warden, and so far it is all around the most immersive since your characters comment on the Blight outside of Warden missions. It almost feels like the game should be played that way. I might be feeling bias and nostalgic from DA:O though.
"Blight up ahead, I feel it."

I can't comment on the rest.

I think it's going t ob ehard fo reac hof us t ojudge until w epla yal 6of them but for me I'm definitel yfinding m yWarden Rook prett yimmersive. Sh edefinitel yfeels connected t othe world around her and cares abou twhat's happenin gan dshe want's to put it right as she feels it's partly her fault. A tleas tthat's how I'm RP'ing her. So far I'd say it's working.

Grey Warden

How could one possibly tell without beating the game from beginning to end 6 times over, with every faction available?
All we have to go buy right now are hunches, honestly.

I agree with the consensus that it's the Wardens, but like everyone else I'm guessing. I don't think anyone here has had time to finish this game six times already . (Well, anyone who's not local BioWare Ninja Luke Barrett, anyway.)

Lords of Fortune is the one I played first, which was about what I expected - fun vibes, great outfits, minimal faction involvement in the plot. I expect Mourn Watch is the same way, with the Veil Jumpers, Shadow Dragons and Crows in the middle for plot relevance and the Wardens on top.

It seems like the 'best' Rook is a dwarf or elf Grey Warden.

Think Solas and Bellara already addressed this point Whether or not they are literally 'your gods' most of the rest of Thedas views the Evanuris as a very Dalish thing and would hence blame the Dalish for them getting out. Solas was afraid and Bellara was willing to take some responsibility in the matter. 

My point is that the line can be interpreted as a distinction between our gods (owing to Elven culturural heritage) and my god as in what an individual Rook's religion is. Afterall contextually this is how both Solas and Bellara use the line, Bellara certainly has no reason to believe that the Evanuris are her gods per the events of the game and the codex, and yet she refers to them as such because of the responsibility she feels and also the worry about what the rest of society will do to the Elves because it is *their fault* that *their Gods* are rampaging about. And Solas certainly never believed they were gods but he had largely the same concern in Inquisition. 

Yeah about that...
If you play a Grey Warden you're not a Dalish elf. You're a city elf.
If memory serves you can say you have Vallaslin you did at a later age to reclaim your heritage. With the mirror stuff.
I'm not sure elves can be Dalish in this game. Perhaps Veil jumper.

Definitely you can be Dalish, my character talks about his clan customs and when you meet a character from Davrin's past you can indicate that you are Dalish.

As a warden? Because when I used the mirror my elf said she wasn't Dalish.