then they should have scheduled it for the weekend before the 28th to get atleast a weeks worth of legitimate testing done before the majority of beta testers within the vanilla private server community left for a released server. its just not efficient in regards to beta testing.. I can see them hosting their open PTR for months before real progress gets fixed and done before they announce a release.
tldr, I really wanted to test kronos out as well and see what they have in regards to bugs and broken mechanics too because I enjoy the testing part.
but myself and probably many others who were adamant testers are not going to miss Nostalrius release to retest another server again..
"the early bird gets the worm"