At this point he doesn't need the belt for half of those matches but the benefit of Roman being a part timer and WWE booking improving is that new matches become available and more wrestlers become relevant instead of retreading the same matches and everyone looking 2nd tier, like what happened with Brock's title runs.
So yeah, in theory they can milk at least another full year of Roman as champion with fresh challengers
shyt, you still have Gunther and an unification match with whoever holds that bullshyt WHC they created for Seth
I still would take the title off him and book him like Vince Sr. booked Andre