That would exactly be what a user of the development branch would do. All that other stuff about having other installs of Ubuntu on other partitions or drives is just personal ways of using the development branch that different ones have worked out.So, seems my choice is to either continue and roll into 13.10 and use it until 14.04 arrives....
I am avoiding thinking too far beyond next year. I am aware of how fragile life is but more significantly I am not sure where Ubuntu will be going after 14.04/14.10.
Some said that Ubuntu 10.10 was the best Ubuntu. But what improvements does the best Ubuntu need? Well, they came up with Unity and multiarch all the improvements have been working towards those goals. My point is, if Gnome.org had stuck with Gnome 2 and Unity had never been thought of, then how different would 13.04 be from 10.10?
And at the moment convergence is the desired aim for Ubuntu. But where does Ubuntu go when convergence is achieved? I have no idea and hence I avoid thinking too far into the future. How different will 16.04 be from 14.04? Not much I think. So, now you know why I am not allowed to do too much thinking.