Hoping to test this sometime before Wednesday, especially curious if the Kong as a LB doing active health checks factoring in the FQDN along with the ip:port pair is working great now. Been really looking forward to cutting out some middleman LB tools and letting Kong handle that all! 
One slight concern I have around Kong as LB is this:
Which Kong solved in one iteration for pure regular upstream proxying by adding the option to do the rebuilds to the background as a pattern with eventual consistency. Might be doable in this case as well.
Thanks for all Kong Core teams hard work! #KongStrong