It's not analysis as such but having moved away from Scotland in the early 80's I've witnessed dramatic changes in the country on my infrequent trips back home. The changes haven't been gradual for me because I've witnessed them at roughly 12 month intervals.
The Scotland I left in 1983 was light years behind the Germany I moved to. Now nearly 4 decades later the gap in standard of living is minimal. The biggest gulf is in public services but that's not surprising considering the Germans pay more in taxes than in the UK.
As an outsider looking in it's obvious the EU has been good for Scotland and having a devolved parliament has almost certainly helped Scotland catch up with the rest of Europe.
Again I'll say my impression is subjective but the cynic in me feels that many of the EU financed projects that have benefited Scotland would never have happened if it had been Westminster deciding where the funds go and can't help but ponder what could actually be achieved if Scotland had full fiscal control over its finances.
Just my tuppence worth.