I'm guessing the pickle fork system has been designed with some redundancy (i.e. the failure of one pickle fork won't cause the wing to snap off)? In addition, is there any way to spot a broken pickle on the bird? No doubt if this is a manufacturing issue, which Boeing is liable for there will be significant costs and downtime involved for all birds impacted. Hopefully we don't end up seeing a flock of NGs grounded in Washington. 737s love to migrate
From the standpoint of the airline, perhaps UA could come up with some livery choices to make passengers aware of the birds they are flying on. For the NG it could be Star Trek themed, Mad Max : Fury Road would be a pretty solid choice for the 737 MAX.
Safe Travels,
James