I also don't think that Hildon name is relevant anymore (as well as Maemo). They are already historic and don't really apply to the new developments (such as Mer for example).

Starting a fresh site is good, unless TMO can be thoroughly cleaned up and restructured, plus better moderated to stop pollution of threads with offtopics and trolling.

Focus on hadnsets or tablets in the name is probably not good, something like Open Devices would sound better. Or if you think it should be more about the software side, may be Open Mobile or something?