Off Hand for Minecraft Bedrock Edition (my version)

I have my on idea for the off hand mechanic on Minecraft Bedrock Edition Instead of using a new button to use off hand, i more like if we use this off hand mechanic For example, my Main Hand is using sword and my left hand are using cobblestone, if we hit a mob then the main hand (sword) will be used, but if we touch something that we can but a block there like dirt, the cobblestone in left hand will be used If bot hand is use the same placable block, main hand will be the priority For mining, whatever the hand that are using torch or pickaxe, if we hold click, the pickaxe will be used but if we just click once, the torch will be used For bow, just the same if we hold the bow will be used if we click once the block will be used If left hand is using sword and main hand using cobblestone and we want to open a chest, we will open the chest when clicking it instead of placing block Every item has this CAN_ATTACK CAN_BREAK CAN_PLACE CAN_USE CAN_THROW CAN_INTERACT And also with mob TARGET_ENTITY TARGET_BLOCK TARGET_BLOCK_FACE TARGET_AIR TARGET_INTERACTABLE Also add a small transparent button to swap item from main hand to off hand or opposite quickly without needing to open inventory