Inventory, Off-Hand, & anti-Mob Griefing Idea

Hello Minecraft Bedrock Team, 

I was hoping you could make the option to "keep inventory" and anti-mob griefing on without disabling achievements on a world. I would love to explore the world and battle powerful monsters without worrying about losing my inventory. Cause right now, I'm very hesitant to do any combat with powerful monsters. Also, torches should be able to be put in our off-hand to make mining easier. 

I (and probably many other players) would appreciate this game feature. I hope it will be a future feature in a upcoming update. Thank you for your time!