I think the reason why we haven't seen these two interact is first of all, Miz doesn't show up to interact with many people on NXT on-screen other than his own rookie, and I don't think in general that there has been many scenes where a Pro interacted with anyone else than their own rookie.
And personally I don't really think this faction would work, seeing as there's only like.. two people for that at least from the two you named, and that would make it more of a tag team than a faction, or a manager / wrestler role you could probably say.
On the other hand, I don't really think the faction or these two pairing would make much sense, seeing as yes they have charisma looks mic skills and no they do not both lack in ring ability, Miz is doing just fine in the ring, and Otunga is still learning, but I think the fact that their so obviously alike would make a pairing of two that will eventually be unable to stand each other cause they both will come off as the better man, and while it might push for a fine little feud, I would much rather see Miz feud with Daniel Bryan than Otunga right now.
And while I do think you're right that Miz might interact with Otunga on this coming RAW, I do not see it turning into anything but a one time interact.