A fully open source device might be ideal, but the time for dreams are over.
That means no-go on Jolla too transitively. Because all they've done would be to add the presentational layer (oversimplifying a **** ton here) on top of the Intel/Nokia (North America company/North American handset division owned company by now) Linux Foundation (biggest office is in North America - San Francisco).
Innovation, community, meritocracy and openness does not need to come from one continent.