Do we even know if Hazou has a dormant Sharingan? And do we even know if we can trust Sasuke? His regent kinda screwed us over once with the Hyuuga, right? And depending on the level of independence that the regent has --as in, to what degree he answers to Sasuke --then we might not be able to trust Sasuke. In canon he was all about killing Itachi but in MfD he has an entire clan of civis to look after, so he might be more focused on getting the Uchiha back on their feet. Maybe we can take advantage of that, now that the Hyuuga Clan is crippled at the moment?
Also, side note, can civilian Uchiha have babies that awaken the Sharingan? I mean, they may not have the advantage of ninja-pedigree working for them (for whatever that might mean in MfD's magic system), but it might be at least feasible for the Uchiha Clan to have a few kids in the Academy right now. I mean, let's say that Itachi killed all non-Sasuke Uchiha ninja 8ish years (random number, please don't kill me) before now. That's eight years for people to make babies (something that statistically happens a
lot more after a tragedy, see birthrates immediately after 9/11) and time enough that they're likely to be in the Leaf's Academy. And the Uchiha clan only needs, at minimum,
fifty people to avoid genetic inbreeding. Unless, I suppose, the rate that a civilian Uchiha unlocks the Sharingan is something like 1 in every 75 people.
Edit: though it could be that they all died in the Sinkhole Incident