There used to be quite a good site actually, but it closed. I think i’d sooner take the bad decisions than be obsessive to the point that you have to log and rewatch every decision.
It’d be a good idea, though, in theory anyway, if you could get ten neutral fans who each watch one PL game every weekend, to generate data over a season to see if these things really do ‘even themselves out’, particularly in terms of top v smaller sides, home v away decisions, ref v ref, etc.