First off i'm no expert in English Grammar. 1) if there are proposals plural then replace the word "this" with "these" 2) if there is only one proposal then you would use this proposal. 3) the first sentence with the comma looks good because the second part of the sentence is clarifying in what context the proposal is not extraordinary, but there are some words I would change to clarify what you mean (something like this: seen from the perspective of anywhere else in Europe). 4) I think the second sentence is just a run-on sentence. I hope this helps.

Got it. Thank you Gary

The optional comma is a minor issue in this sentence. The incorrect 'this', which should be 'these', the second 'from' which should be 'of' and the awkward grammar of the rest of the second clause are much more major issues.