You heard of /heal all, get ready for /fix all. Fixes all items people are wearing as well as what they are holding. (may apply to hotbar but not whole inventory) A workaround to the /fix cooldown people have, also allows you to fix items without having to stop what you are doing to fix each item.
Oh I wasn't aware it was a thing as people were complaining on skyblock/survival about how tiresome it was to fix items. I haven't seen people use it if it is a thing and I would've assumed people would pass that knowledge along or ask for it more.
/heal all would only heal people whose username starts with "all". The command to heal everyone is /heal *. Also, Titans already have /fix all on most servers with /fix.
Support for it to fix everything in your inventory (skyblock & survival currently don’t have it) - I suggest that it becomes something you can buy from the quest shop
