What would be the point in a further extension; a deal has been done, both sides seem happy, there are going to be no further changes to that deal.

How would an extra 3 months help anyone?

If EU want this deal, they need to say "there will be no extension, so vote it down at your peril"

The 'rebels' are refusing to allow a GE and they won't get the maths for a 2nd referendum.  

So what next? Indefinite paralysis by analysis?

Didn't say that though. Also EU Parliament confirms their position is an extension should be granted if requested.