Re: Centos & Mint
The mobile is overrated (and over hyped) in some respects, but how many people do you see a day using mobile interfaces vs. desktop (provided you actually go out in public).
If 'linux remains a desktop only interface it faces fading into even more into the obscurity of the server room (and maybe only seen running inside Azure).
Serious use will always be desktop oriented, as it's done at a Desk. The IT 'desktop' paradigm could still use some work. The mouse is spectacularly poorly designed for extended use, the keyboard less so (but most layouts designed to prevent long gone mechanical parts from getting tangled).
Unity is one of the few desktops that work really well without recourse to the thrice damned mouse (aside from tling wms)