I'm really hoping that the piping is fixable in this bag, because then I'd definitely have no hesitation at all to send it back to get it fixed. My qualm lies with the socially-responsible side to Ignes, and whether or not it's just a waste of an otherwise fantastic bag to make a completely new one. What would you do if you were in my shoes?
100% return it. I think Ignes is great, but that pipping is unacceptable. They can explain it however they want- but if the bags are not defective, then they should have no problem reselling them so they are not actually taking loses. If they are defective, then they need to figure out what is going on and fix it. The more people that speak up, the better because it puts them on notice.
I am not sure why some people are getting gorgeous bags and others are not. Maybe new hires?