Would it be possible to have the highest rank bandage/food in the backpack to be used when out of combat. This would be very helpful.

I think this is interesting but I'll have to take a look at because i don't know if its possible with conditions eg [nocombat]

Should be able to use the combat events to know when you are in and out of combat. Currently you are using player regen to indicate out of combat. So that could be used to as your event to check for bandages in your macromaker section. As for going into combat, you have that when you check for combat lockdown.

Since I haven't done macro addons, not sure if you can update the macro during combat lockdown though. So that could be the tricky part possibly.