Another somewhat obvious feature, if you think about it, is to have a click to call ability via the portal. Since we have the ability to define a gateway on the portal (OBiAPP), redirecting the sound to the computer should be doable.
This could further entrench the OBi user base being dependent on the OBi product, since the OBiAPP runs off the OBiTALK service. This should be compelling enough for obihai.