#3. Dominick could attack Samoa Joe
Dominick has been on the outside of this feud ever since it was announced for WrestleMania a few months ago, whilst Joe hasn't laid a finger the son of the current United States Champion, he was at ringside and watched the beating that his father went through back at Money in the Bank and could have decided that it's time to get revenge.
If Mysterio is defenseless next week on Raw and forced to relinquish his title, then it's easy to see Dominick stepping up to defend his father and attempting to attack Joe. Of course, Joe is much more powerful than both men and this way of thinking wouldn't go very far, but it would allow a feud to open between Joe and Dominick and by the time Rey is needed to wrestle again, hopefully, his shoulder will be healed.