Re: "A third country might offer a new couch"
And who, pray, issues that visa?
Turns out the UK doesn't...
The Guardian had a report that Ecuador recently applied for a diplomatic visa for Assange - and the government refused. As was rather political.
I think the FCO feel that there's no particular cost in him hanging out there. But Ecuador pissed them off, and made a great song-and-dance about doing it. So they're not going to give them any help to get out of the situation. And force them to back down publicly and kick him out, or put up with him.