I honestly just think there needs to be more copies of the NPCs that give the ops.
It's really dumb design that some of the mobs are nowhere near the NPC.

As far as page repeats, SE said it wasn't possible because of the way dominion was designed. It's original intent was not "do page, get exp". The "idea" behind Dominion Ops was to keep doing them for "progress" to spawn NMs and ???s. Except, capping that progress ended up being ridiculously easy, and you almost never see said NMs or ???s despawned.
In short, the reason they can't set it to repeat, is that they can't add the "progress" part of dominion to an auto-repeat code. Even if they could, SE would probably think it's too unfair for the design around it.