I'd prefer a selection system that ranked contenders based on a more certain "hard target," established years in advance, so they all know what they are shooting for -- be it GS, % of ARs or WRs, whatever -- but not a percentage of a floating total that waxes and wanes year to year based on events happening with other lifters in other environments, and that appears to have poor predictive value anyway.
But using the GS doesn't establish a QT for each weight class and therefore there isn't a total to work towards.