So now I have read through all the posts some comments,

I have to disagree with @phMO and others who have remarked about a “lack of fun” this series. I have found it to have many LOL moments. The style of humour is different to that of the M.S. era. It is juxtaposed against the more sombre overall tone of the series but those moments are there…[Read more]

@VoidStuff They could conceivably use the Zygons as an out to bring back Osgood.  We don’t know how the Zygon issue solved itself or what deals were made in their treaty when both sides didn’t know who they were.  So it’s possible that Kate and Osgood were Zygons.  Good catch.