Do it!
You have all the necessary footage already.
As I said it before I lost patience with you it will look weird but go ahead and do it and post it on another site and taunt us all with it if you think we are such a bunch of twerps.
I considered mapping sampled details of Ben's hut to a digital model to create a virtual set for an idea I had.
It's beyond my abilities but something like that might be possible and give you a simulation of some of the missing pixels.
A good computer model of the costume and sample from the actor's face from better quality footage could tart up the fuzzier frames.
But it will look weird