I got two multiplayer map ideas (Second one will be coming soon). First,
Name: The Desert Fox
Caption: "A UNSC Fort fends off a Covenant Tank Force. This is the Last Stand & The Last Stronghold that blocks the City Of Baghdad."
Description: It takes place in the Deserts of Iraq. Dunes over Dunes provide little cover. A UNSC Base stands between the Covenants & Baghdad. (Sandy Climates). A huge level similar to Sandtrap. A UNSC Base holds many vehicles like 2 Hornets (Desert Camo), 3 Sorpion MBTs (Desert Camo), 2 M12 Warthogs (Desert Camo), 3 Mongooses (Desert Camo), & 1 Elephant MCP sits in the middle of the Map. A Fortified Base with two Gates (West & East Gates, And same Base format as High Ground).
On the Covenant Side. They have a Abandon town that holds 3 Wraiths, 4 Ghosts, 2 Prowlers, 2 Choppers, 3 Banshees, & A Shadow Troop Transport blocking the entrance to the Town. The remains of a Scarab crashes through some buildings making it as a makeshift base for the Covenants.
Debris of Battles & tank remains (even the T-72 Tanks still remains there.) Each base has their own weaponries (Covenant Makeshift Base has the Covenant Arsenals & the UNSC Base has all issued-UNSC Weaponries.) A Saprtan Laser sits in the middle of the map & inside the UNSC Elephant.
A huge map & a battle that was inspired by Operation: Torch.