As a complete amateur, i'll need time to digest how your system might work/apply. But from first glance, it looks like what I meant to ask for, a system that isn't based on how big a kings foot was or simply dividing an Earth day into specific counting frame of reference and make everything work...
What might be better foundational units given the knowledge we now have and disregarding legacy, human-scale units. Perhaps setting some known constants to be the base unit of 1 in that measure. For example, the second, based on the unperturbed ground-state hyperfine transition frequency of the...