Container-friendly OSes are definitely the future. While CoreOS isn't the only one (Atomic, Photon, Snappy), there's very little need for most OS features that

Container-friendly OSes are definitely the future. While CoreOS isn't the only one (Atomic, Photon, Snappy), there's very little need for most OS features that we traditionally expect in servers when lightweight containers wrap all our applications, and cluster schedulers manage failover. As for load-balancing the problem, there actually is added complexity in new architectures because we add a layer of orchestration on top. However, that layer on top is becoming more and more necessary, so it makes sense to move a lot of functionality out of the OS layer. If you want an example, think about how modern disk systems expect JBOD instead of RAID. When there is innovation on top, the underlying system can become simpler.