I know I saw a thread not too long ago about how it'd be nice if you could still talk to the Haven NPC's and the wandering agents once you get to Skyhold, but really I just really wish there were MORE PEOPLE in the Inquisition and that they actually DID SOMETHING.
It'd be nice if some of the Inquisition camps had someone there--a sergeant, a lieutenant, a merchant, something appropriate to the area--with a name, and a few lines of dialog about what you've done in the area. Find all the camps in the zone? "We have the area secured now, Inquisitor!" Fulfill local requisitions: "Supplies are good for now, Inquisitor!" So, tell me about yourself: "I'm from X burg, want to get back to my little boy, Inquisitor!"
Everything felt so static and the soldiers were window dressing.
I don't mind fetch quests, and I don't agree with the folks that say, "There's too many fetch quests." I don't think that's the problem. I think the problem is that there isn't very much connection between that and what I just did. Take the Requisitions, which you mentioned. I wouldn't expect them to comment on everything I did. After all, there's only so many times a NPC could say, "Thanks for the metal/stone samples."
Still, while I've been replaying the game, I think it would have helped immersion if we could have gotten little bits of dialogue. That's an area I felt like they did a decent job with in a few zones like the Hinterlands. Folks talking about being warmer, better fed, ect, really helped make those fetch quests feel meaningful. It would have helped if that constantly talking Requisition NPC would have changed it up sometimes. You know, something like this.
"Thanks for much for the anti-venom. Our troops will have an easier time now."--Storm Coast
"Those tapestries that we put up for the Inquisition are going to excellent use."--The Hinterlands
"Thanks to you, we have more information on the Venatori."--The Western Approach.
I think things like that would have helped some of the quests feel like they had an impact. As Tranquil pointed out, I can understand why the limitations were put into place. It might be too late for DA:I, but I think this is useful feedback for the future. 