Spike (II) kinda reminds me of what William's was attempting to do during the System 3-7 era of games: Make the CPU and driver board modular, so that field repairs would simply consist of swapping a board out for new.

I have literally zero hands-on experience with Spike, so my opinion is based merely upon reading about it, but it seems like Stern decided to run critical data lines through those ethernet cables from node to node, and a single node failure can take down a whole game--not unlike William's 40 pin connector. How will Spike games fare 20+ years into the future? Will they age as gracefully as WPC games or SAM games? I guess time will tell.

It seems like the pinball hobby is incredibly resilient, so I'd think that as long as there is a demand for replacement, there will be people like Rottendog, Homepin, or whoever to remake node boards well into the future.