OK fair enough.
A regression in features when it's not mentioned that it would do so is to me a bug. VMWare came out and said they'd fix the PSOD pass through issue before year was out and they hit that target. It would just be nice to know if they intended to do anything about this bug and a rough timescale. Instead they seem to be staying silent.
KVM appears to be focusing heavily on pass through currently as well as adding in important features like snapshots, live migrations and so on. The progress currently from their camp is impressive.