Next Generation Ethernet News: Ethernet over MPLS specification

"I'm glad to see progress being made, but I wonder have we forgoten about the payload? I mean, if we have IP over Ethernet over MPLS over ATM over Sonnet, are we starting to run out of room for the payload, the reason for the packet anyway? Or is bandwidth and cpu cycles getting so cheap that we can afford fragmented payloads and High header to payload ratio's?"