Surprisingly sexy looking thing, except for the home button.

Conspicuous lack of information about screen resolution, and a ridiculously high price given the specs relative to equivalent Androids and Windows devices.

I'm a (fairly loud) FF OS detractor, and this flailing around looking for a niche (apparently this time Japanese web dev geeks that will prize ideology over function) betrays a complete lack of market demand for it. Google's Android 5.0 screw up is causing there to be the biggest opportunity for a mobile OS land grab in years, but you're not going to progress with an even more extreme version of the ultra-thin-client model.