I think the story arc for the new series will be



we have already seen



and... also, another thing I noticed -- which may be something and nothing -- is

I understand the first part but what has the next one got to do with it lol.

I wondered if the 'arc' might be to do with
that The Master mentioned in 'Utopia'

Ha ha nothing, just that The Doc wears a brown suit (sometimes)

You might be on to something with

When the Dr first met Foon and her husband she mentioned

I realise its a bit too far fetched...but it gives us something to ponder on until the next series starts.