I love the Monsters so I wouldn't get tired of them quickly lol. Gimme 5 more years of Monsters and I'll be forever grateful.
Tbh, I could also see Universal doubling down on Monsters BECAUSE of Dark Universe. But I think the most likely scenario is that the Monsters are given an "epic" (pun intended) send-off either next year or in 2025, just in time for Dark Universe at Epic Universe.
If they discontinue the Monsters as an annual house series at some point, then the Icons could fill in every year to give us a nod, and they don’t have to be actual icons again to have their own houses, so the IP’s can be first and foremost in the market for the event. I call that a double win for the fans and the masses.