#3 We see a Red Flag
The last time a Formula One race was stopped by a Red Flag was at Baku in 2017 after great amounts of debris clogged the track. Even the massive crash between Daniel Ricciardo and Max Verstappen last year didn't cause an unscheduled stop, meaning that it would take more than that to warrant a Red Flag.
This time around in Baku, I believe that aside from a big crash, we will see lots of little touches and incidents between drivers to strew debris all across the track and at some point force the steward to bring everyone in and restart the race. While the Red Flag in Baku 2017 occurred rather early on in lap 22, this time I foresee a late stopper.
I also see the Red Flag having a destructive effect for some of the top drivers' race and creating a bunch of chances for midfield drivers to steal a podium.