I don't recommend to change things as long as we don't run out of addresses.
It wouldn't hurt however to start by marking the test usage of 44.161.0.0/16 as deprecated so OMs can plan to migrate their configurations.
I guess you are talking about 44.128/16 rather than 44.161/16...
I don't agree on this. I don't want to migrate to RFC1918 addresses. I want to keep 44.128/16 for testing purpose.
73, Jann