Interesting news. It's pretty hard to point to anything of value left in KGS environment. There are few things which would be extremely hard to transfer or monetise - like learning environment, some study community, and only one really 'innovative' aspect (imo) that is the ranking system.
Honestly we do need a one solid western Go sever rather than a multitude of so-so platforms. I do believe that OGS is the platform of the future, but KGS barely floating on the surface doesn't seem to help the cause. I'd much rather hear that OGS stuck a deal with KGS - purchasing the ranking algorithm and setting a deal where KGS officially could bless OGS as it's successor and worked on ways to migrate the users/rooms to OGS automatically. Problem solved, everybody are happy.