I am not a fan of enhanced mobility in Halo, and would prefer if the franchise went back to its roots in terms of gameplay, but I know that would isolate many fans of Halo 5. I don’t see 343 going back to classic gameplay in Halo 6, and I don’t think adding a classic playlist in a game designed around enhanced mobility is the correct answer (Halo 3 anniversary playlist in Halo 5 was still a blast though).
Since playable Elites are one of the most requested things people want to return in Halo 6, perhaps Elites wouldn’t have enhanced mobility like Spartans. Their base movement speed would be increased, and perhaps they could barrel roll, but regardless, the the player should really be able to shoot, throw grenades, and melee at all times.
There could be several Elite exclusive playlists for players that want to play classic Halo, and there could also be some Elite vs Spartan playlists.
I know a unified play-style is ideal, but this would at least allow all Halo fans to have some outlet that doesn’t exclude one group on a large scale. Plus, whichever play-style remains more popular over time might help shape the future of the franchise.