Hi,
Last night, Update 1 of the JSR 363 RI 1.0 was released.
Especially adding a new unit with a desired label and/or name became a bit easier and usually allows declaring everything for that unit in a single place.
UoM-SE should follow relatively soon, e.g. the NumberQuantity issue existed in a similar way, though e.g. the Java SE 8 port already exposed it in fewer places before, so it was less affected by the problem.
Regards,
Werner