Imperial measurements need to be done away with for good.
Everything in the S.I. system ties together in a way that makes sense and is easy to calculate.
eg. 1 litre of water weighs 1kg
1 litre of water has a volume of 1/1000 of a cubic metre or 10cm x 10cm.
1 joule is the energy expended exerting a force of 1 newton over 1 metre.
1 joule = 1 watt second
The downside of this is talking about fuel consumption. Who asks about the Kilometreage of their car?