@dgoldsmith I'm really not sure that replacing MET is needed just yet, but it's a very optimistic move.
(MET, as you probably know, is mission elapsed time, which has been fine and will remain fine until we have satellites around the moon or other long term presence.)
@adamshostack I don't think it's really needed for the function that MET serves, but more to have a standard to coordinate multiple spacecraft/experiments/instruments/etc. Yes, it's a bit forward-thinking.