With Luck Oda will do arcs more like pre-ts. So, while short and with few chapters there's more content.
I think it’s more likely we’ll get other people taking down some of the other candidates like:
Blackbeard taking down Red Haired
Marines buster calling Momoiro Island lead by Akainu and taking down the revs outside of a few main members
Cross Guild taking down the World Government in the meantime
This will leave the only groups left as:
Straw Hat Pirates
Blackbeard Pirates
Cross Guild
Which is ideal for a final saga with Blackbeard Pirates as mid Saga opponents and Cross Guild as final opponents