Spectator Survival

Spectator Survival mode, Ghost game mode. spectator as a gamemode is already like Creative you can fly and move through everything without dying, now image a spectator mode that is more like survival mode, your invisible intangible, you can't exactly fly but you can still walk on blocks and move inside things but slower, like air is water and blocks are like climbing scaffolding you can stand on it but still move through it slower like you in water. Maybe in this gamemode you have health and hunger so you need to avoid taking damage from certain things like sunlight and just like Spectator mode you can possess mobs with their pov, but it's only temporarily or something, and you can heal somehow like with experience points. and as a gamemode other players can't interact with you unless you do something idk like respawning you.