>>2129066
Squad-based, turn-based tactics RPG set in the Metal Gear universe. Basically a Metal Gear Xcom-like. There's several possible settings and time periods for the games ranging from MSF mercenary work to FOXHOUND clandestine operations, although I think Diamond Dogs / Outer Heaven would probably be the most familiar setting. It'll have the classic feel of Metal Gear with military realism combined with the occasional sci-fi and supernatural elements. I am aware of Metal Gear Acid but this would be quite different, focusing on entire squads and without the card system.
You manage a squad of soldiers, decide their entire loadout including things like what camouflage they wear, and send them on missions. Obviously there will be stealth mechanics with the classic Metal Gear "!" alert if one of your units gets spotted. Individual soldiers can specialize in certain things like CQC, medical, sniping, and maybe even some soldiers with psychic powers. Obviously there would be a wide variety of missions in many different environments. Maybe the ability for your squad to fulton out soldiers to be recruited as well with many of the Mother-base managing mechanics from Peace Walker / Phantom Pain like RnD.
I would also want there to be an autistic level of detail that affects how players play the game, for example if they were sending their soldiers on a mission against Soviet or Soviet-supplied troops then players would probably equip their soldiers with rifles that use 7.62mm so they can scavenge ammo, likewise if they were going against US/US-backed troops then players would equip 5.56mm rifles to use looted ammo. Along with things like weather affecting visibility and movement and leaving footsteps in the mud/snow ("Who's footprints are these?", MGS1). Players would have to make sure they disable or move out of range of anti-air before they call in a chopper for exfiltration/resupply like in MGSV. Troop morale and inter-personal relationships would also be a thing.