New Gamemode (Creative/Survival)

Okay. So. I would love to see a new game mode that has the creative inventory available, but functions as if survival. For example, having a health bar, degradable food bar with the same functions as when you have different Game Difficulties, and ability to die from external obstacles. The game mode doesn't need to have achievements/advancements. I just think this would be fun. Enjoyable, and provide a fresh perspective/functionality on building/creative mode. Perhaps this could even just be worked into creative mode as an optional setting. I just happen to find the survival style of building, fun, while also enjoying having access to the creative inventory. Switching between each game mode is tedious especially on console, no matter how user-friendly the UI is, which it is very user-friendly in my opinion.