I'm pretty ignorant when it comes to this electronic stuff but has there been any known reasons why these boards have failed? If it was just a need for fuses, couldn't those be added by the aftermarket?
Regardless, I don't get all the complaining. I don't know of any paperweight Spike pins and seriously doubt there will be any time soon. Sure, it will be costly to fix but guess what - they are costly to buy in the first place. Complaining that you have to buy a $400 board to fix your $8000 pin is the very definition of first world problems. Nobody forces you to buy a pin and nobody needs one. It's a luxury, niche item. The simple solution to avoid all these issues is to not buy a Stern Spike pin. If you got own one and worried about costly repairs, sell it. Problem solved.