Not at all, we could have physical legacy and intangible legacy.
Also, we will have to set a date for the assessments to be considered in universe. Perhaps just prior to the collapse of the HPG network in the Dark Ages. That way, the various attributes are scored according to that time view.
The other method is to score them against their own time, in comparison to those that lived at the same time.
Additionally, seeing what you would score them as, opposed to me is why an average across multiple posters would give a more balanced scoring.