This is fundamentally wrong because you can't look at populations across different units as one universal herd. If you take your tag for Unit A that has a population that can support removal of 100 animals and fill it in Unit B which can only support the removal of 10, then you've damaged the herd in Unit B. And this is backed by real world circumstances - there are plenty of units in WA, OR, and ID where there are robust populations with over the counter opportunities, and controlled units with severely limited opportunity in the next unit over. If what you were saying was true, they wouldn't bother with unit designations at all.