The problem I see is that at these types of speeds, timing skew is going to be a crucial issue. Latency will dominate the design. I can see a design much like e

The problem I see is that at these types of speeds, timing skew is going to be a crucial issue. Latency will dominate the design. I can see a design much like early computers with delay lines used as RAM. You could keep a series of packets in a fiber, and then operate on it at the appropriate time.