But we've chosen not to go the startup route, which means we can only really afford to work on rkt in the context of paid work. We're looking at doing more of this in the future through support contracts for Flatcar Linux[0], a fork of CoreOS' Container Linux, which includes rkt in the images, and through the contracts we get here and there from users looking for new features in, or support for, rkt directly.
But rkt, as is, remains a great container runtime. It's our preferred runtime when running outside of Kubernetes, atm. The Kubernetes integration via rktlet[1] works well but does not have 100% functional parity with the default CRI implementation. It probably needs about 3 person-months of work to get there at this point.
So yeah, it works well, but does indeed need a bit more love. If you're interested in helping out, get in touch.