I don't think it is possible to successfully run an airline for very long, with front line staff who only have 5 days training.
Seemed to work pretty well at BA.
VS and BA pilots can soon be replaced. There are hundreds out there who are qualified to do our jobs. Remember that Yellow Pen.
Yes, they can be replaced. But no, they can't be replaced soon. It takes 3 months to line train a pilot to BA/VS standards. Thats assuming there's simulator and training capacity available for mass training purposes, which there isn't.