The APNIC policy proposal 94 allows an operator to put in for new
IPv4 space without having to renumber, if they can show that they've
used 80% of the space already obtained from their upstream.
That seems bad in two ways
1. It allows 19.99% of IPv4 space to be hoarded.
2. It probably encourages disaggregation, compared with
renumbering into this new block.