I'm also confused -- we're going to rip out an entire OS only to replace it with a web browser which is, by design, unobtrusive and supposed to operate like pretty much every other web browser. If you're going to do that, what is the point of developing the OS? You'd be much better advised to just ship Ubuntu and Firefox with a custom theme and the metaphorical serial numbers filed off. (Its a bad idea, but it strictly dominates the worse idea of writing your own OS and your own browser.)