I am interested in Xivo (whatever their new name is).
It is not production ready like FreepBX yet, but their goal of making everything accessible via REST API will make it a very flexible thing.
Me too, certainly lots of potential and I hate the FreePBX interface, so am hopeful there.
Let me know what you don't like if you have time!
Also the Wazo(XiVO) developers are great guys. A few of the FreePBX team (Rob Thomas ( @xrobau ) and I) talk to them ( @quintana ) weekly on IRC/Twitter and we've conversed over a hangout session and at Astricon.
Update: We prototyped integrating NoVNC with the Hypersocket VPN. It was relatively simple as it hooked straight into our forwarding mechanism that was already using websockets. Will be releasing an update to support this in the next month or so. We will also integrate our client-less SSH terminal at the same time. RDP is a little more complex so will need further research before we can support this.
Ya for digital stuff, it's awesome. I can see why people don't use it for print much because of the lack of CMYK but I did design these labels for my buddy's brewery and they turned out not too bad.