#3 No-DQ match but Ziggler gets an advantage
It's strange having Extreme Rules without an Extreme Rules match, that being said, all an Extreme Rules match really is, in definition, is a No-DQ match.
If Dolph Ziggler waits until the match begins and then announces that his stipulation is that it's a NO-DQ match, but only for him. That means that Ziggler can assault McIntyre with as many weapons as he wants and go against the rules as much as needed without getting disqualified.
McIntyre, on the other hand, has to continue to wrestle the match to all of the rules and isn't allowed to use any of the weapons otherwise he will be disqualified.
There is enough heat between the former friends for this to be the stipulation that Ziggler has chosen and given that he's waiting until the last minute to announce it, it could give him a clear advantage.
Could we see Dolph Ziggler walking out of Extreme Rules with the WWE Championship around his waist? This seems like the best option for that to happen.