[PorterDuff]

I'm always in favor of homebuilt OS projects, I've worked on several in-house OSs and they seem to have good ideas salted around them.

If it were me, I'd write an open source RTOS (yet another one) and cast around for clever notions to stick in the thing, for the mental exercise if nothing else. Perhaps carve out a niche in quality/safety and not so much in performance.

[giancarlostoro]

What I partially would love to see is a Unix like OS for the Pi thats designed and built specifically to take full advantage of everything the Pi has to offer. The Pi especially with the Pi Zero is a great tool to learn and teach. Since the Pi Zero is so cheap if it breaks you buy a new one...

[scintill76]

What does the Pi offer that Linux doesn't take advantage of?