I think vehicles in training mode would be a great addition. Practice with the grappling hook would be helpful. Playing Btb capture the flag with the elephants on halo 3 was always fun and exciting because the flag was never locked in at one place. I personally would love to see a refresh to this mode and vehicle combo
Elephants would be a ton of fun with the higher player capacity in BTB modes. I also wonder what it will be like to use the Academy mode that they showed briefly. We see the weapon drills but only got a brief glimpse of the rest of it. I’m thinking they will have have something like an obstacle course that allows new users to get acquainted with the different movement styles in Halo Infinite. I could see the grapple shot being part of that along with other equipment too. If the goal of it is to get new players used to Halo then it would make sense to include every (or at least most) piece of equipment, vehicle, and weapon in the sandbox.