Not sure if this thread is still checked at all, but I just realized I never submitted my Halo 2 Terminal remake here. It's always been a dream to have one of my maps in matchmaking so I may as well give it a shot. Some might say it's more of a BTB map (I have enough spawns for that too) but it definitely works as a 4v4. As a side note, the current weapons on the map do include some Halo 5 weapons just for variety, but I can easily change it back to the originals if that works better.
Map Name: Tramline
Game Mode: Slayer, CTF, Assault, Strongholds (uses Halo 2 territories locations)
Scaling: Works perfectly with both Halo 5 Mobility AND No Spartan Abilities
Map Description: A Terminal remake that is as close as possible to the original in geometry, scaling, and aesthetics so that it looks great and plays just like the old one. I made sure that it meets all of the basic requirements, works for all game modes, uses the original Halo 2 spawns, and even added extra things like name locations to make it as matchmaking-ready as I could. "The trains have stopped, but the battle rages on."
Waypoint File Browser Link: https://www.halowaypoint.com/en-us/games/halo-5-guardians/xbox-one/map-variants?lastModifiedFilter=Everything&sortOrder=BookmarkCount&page=1&gamertag=AUREL1EN#ugc_halo-5-guardians_xbox-one_mapvariant_AUREL1EN_4deb4f5d-22a3-42ca-a7f2-d44f7d1c434d
Also, in case there's any interest, my Beaver Creak remake was previously submitted in this thread: https://www.halowaypoint.com/en-us/forums/92b5c5cfee994e7299608301a6b2eb11/topics/classic-remakes---map-submission-thread/c032a3b7-e025-43dd-aa4e-39a331a746ca/posts?page=3#post46