Well when the virus is as out of control as it currently is, there's not much that can stop it; exponential spread is no fucking joke. The time to aggressively mitigate was back in September. South Korea has a panic attack any time there was a slight uptick in cases and go into full mitigation mode before it gets out of control. That was the ticket to control the spread but it's too far gone now. All we can do is hope we can out-vaccinate the spread and hope and pray that the new variant doesn't completely take over before the vaccinations have any impact. Problem is, we can probably expect the new UK variant to be the predominant one by February and if we can't even control version 1.0, this new variant is going to cause complete chaos.
Based on the numbers of doses that they expect to distribute in the short-term, I'm not sure a Johnson and Johnson approval will help us much until at least April/May, but at least it will probably ensure we're all done by mid-late summer. Novavax would also be a bonus. But until April all of our marbles are on Pfizer and Moderna hopefully over-delivering the few doses that they've promised.