Quoted from cfh:There is nothing in a spike system, and I mean nothing, that helps the end-user. The spike system only takes care of manufacturing and save them money. To think that the spike system would be more robust than any prior pinball system is just silly. The spikes system was developed to save stern money. It was not developed to make their games more reliable.
History tends to disagree with you. Each system that De/Sega/Stern have created has been simpler and more reliable than the last. Do they save money? Doubtful it covers their RD cost in the near term. It will probably take years for that to be amortized. What will help pay for that is a more reliable system. Less time/money spent fixing costumer issues == money saved.