Well, It never made sense to me, by that time the Inquisitor was merely a device to close rifts, not the leader of anything.
He has mostly the same lines for an Inquisitor versus just the Herald, with only a couple of cosmetic variations to note the change in your status. In the video I linked, he's talking to the Inquisitor.
In general, I think having that quest pre-Skyhold is silly just for that reason, and whether I recruit him or not I always leave it for after Skyhold. It's one thing to bring in some specific individuals, and another to hire a mercenary group.
But you know... they go along with your decision regarding the mages/templars, so...
I don't know why they couldn't leave some things for after Skyhold. I don't think there's a reason we had to recruit everyone (save Dorian/Cole) while still in Haven.