When mining with high efficiency it can be a hassle to switch between tools in tool slots.

I would like to suggest either a setting to enable the backpack to automatically switch tools from the tool slots to the best tool for the block. Or an upgrade with said functionality.

Personally I think an upgrade would be the best option, because that way you can easily enable and disable the setting when unneeded.

I believe Sophisticated Backpacks has an upgrade with this function but I prefer this backpack mod.