I think in Halo 4 there should be different forge worlds. The same one from Reach but with a couple of tweaks We could have a Winter Forge World. We could have summer, fall, or some gigantic flat world which had no death barrier walls or soft kill barriers for at least 2 miles. So that we could make big maps. And add small moutains like the size of the island from Forge world as forge objects. Or have cliffs as objects. And make it so that you have Invisiable walls, cause I'm tired of people with mods getting out of my maps on Reach with the ant-soft kill barrier mod.