We haven’t seen much, however the open world promises of the campaign get me a bit giddy for the forge mode. It’s a bit of an older reference but trials fusion had a huge overworld map you could fly around to make maps with players choosing a start point on the map and going from there, I really hope we see something like this in Halo Infinite’s forge. I don’t know how technically demanding this is, but having the open world sections of the campaign be huge forge arenas for people to create in or even just sectioned off, but still large areas of the campaign space to work in would be the -Yoinking!- coolest thing to have for a definitive Halo game.
im sure they will have something they will have theater mode and custom games so im sure that will give u something to go on.