H3 Forge

So I just really want to forge and yeah, the new H2A forge is crazy cool and awesome and the H4 forge works like it should as well… But I just kinda want to relive my Halo 3 Custom Games days and remake some old favorites and what not. Except I can’t. Halo 3 forge originally only had “Basic Editing” and once in game you could hit start and change gametype to set spawn points, objectives, etc. That button to select gametype isn’t in the MCC Halo 3 forge. So I’m strictly limited to making a CTF map, completeing all the structures and layout, but not being able to put objectives, or even initial spawn points for that matter. I just want this to be fixed… Pls?