#2 The Fiend attacks Brock Lesnar

With Brock Lesnar quitting SmackDown last week, it looks like he will be appearing on RAW later tonight with the WWE Championship. We aren't sure yet if the two top titles will be switching brands but it certainly seems like it, since Universal Champion Bray Wyatt is officially on the SmackDown roster.
WWE can use tonight's RAW as The Fiend's last appearance on the brand for now (if that is indeed the plan) and make an impact, having The Fiend come out to attack Brock Lesnar, laying The Beast down with the Mandible Claw.
#3 Rusev and Lashley forced to tag for one night

Last week's WWE RAW was main-evented by a special Divorce Court version of the King's Court featuring Rusev and Lana. The bonkers segment ended with Lashley coming out and destroying Rusev. Then Lashley and Lana stood over Rusev's crumpled body and kissed.
One interesting way to continue the feud this week would be to force Rusev and Lashley to tag for a night. This could be a great way to book the feud and use it to bring more sympathy for Rusev. Lashley would be booked to turn on Rusev near the end of the match and abandoning him.