Watched a bit of the 70.3 worlds this morning, can't say I recognize many of the names? It seems either many are taking a new strategy, time off, or have retired or not racing as much or just sticking with Ironman? I know some of the names below are "older" but I haven't seen them on races much lately

Andy Potts
Brent McMahon
Javier Gomez
Alistar Brownlee
Bart Aernouts
Tim Reed
Tim Don
Michael Raelert
Cody Beals
Ben Hoffman

This were the first that came to mind, but I am sure many more are in this list.