Metric
Actually first proposed / invented by Bishop John Wilkins, an Englishman, in the 1600s.
The whole World will be metric at some point in the nearish future, most of it already is, so why not just do it now, it makes sense and simplifies measurement? All the really smart people (Scientists and Engineers) have already adopted it, it is just a few stick in the muds that are holding out because of ancient tradition.
Time to move on and embrace the 21st century.