Well, the weather does look better in these pics
Seriously, your Superbe does look superb!
They are smashing bikes, original or not.
They will outlast most of us, for sure.
I've got one now that I'm trying to lighten and 'improve', but it's an ongoing process and some here will not like what I do!!
But I say: "Try it."
It can always go back to original if it don't work.
The quill pedals are a definite improvement I would say. (Grip)
And the saddles can always be 'improved'
But I would not venture out in snow like you showed us before!!
Me not being a coward you understand.
Just sensible
The small wheelers: Well, I always wanted one to experiment with, but haven't got round to it yet.
I always fancied alloy rims, deraillers, and dropped bars.
Plus sensible saddle obviously!
One day maybe.