This idea has been merged into another idea. To comment or vote on this idea, please visit APP-I-1132 Allow custom field/feature values to be fed into scorecard.
Calculating a WSJF (weighted shortest job first) value requires that items be stack ranked on both cost of delay (can use Value as proxy) and job duration (can use Effort as proxy). Your chart capability already does this natively, however I can't use those values to create a scorecard.