I think we're going to see less of this due to IPv6's design, renumbering is less of a pain than it was with IPv4 so instead of splitting off a route in the mid

I think we're going to see less of this due to IPv6's design, renumbering is less of a pain than it was with IPv4 so instead of splitting off a route in the middle of your address space and bloating the BGP table you can just move to a different subnet entirely.