@The:
I would like to see some people who are quite powerful trying to stop the bird cage, just to confirm that they can't do anything and/or show that they are being proactive. I doubt that Gravity will be able to change directions, or even if it's possible, it would be only a small portion. With people scattered all over the place, you would have many doomed to death, so even with some of the strong characters they wouldn't be able to save everyone.
We already saw Fujitora dropping a meteor onto the cage to no effect though.
What I'd like to see is every fighter pursuing the 100% surefire way of stopping the cage, which they were all roaring to do 30 chapters ago: Ganging up on Doflamingo, who everyone is incidentally being forced towards anyway.
Also, use Mansherry to recover some people like Kyros and Barto is a strategic no-brainer, since "saving" her ability is absolutely pointless if Doflamingo and his birdcage is not stopped. Stop Doffy, THEN heal people, instead of letting Doffy kill everyone and healing NO people. Now is not the time to keep your advantages in goddamn reserve because "we're reasonably sure Luffy and Law can handle it", which also instantly drains away tension.
Thats what I'd like to see…but Usopp and the Samurai being cheerleaders on the plateau has me less than hopeful.