Sounds like I'm not needed and that fine. I get the glow of offering without having to do anything!

You know I always like to agree with you, Emmanuel. Parallels has a video option for most VMs "Enable retina resolution". When I've tried that, I've been astonished. There's no scaling. On my 13" MacBookPro, the VM's screen furniture is tiny. Parallels 10 doesn't offer that for my W7/VM. Parallels 11 has removed it from Ubuntu. I bet can be enabled by editing a prefs file.