Program Scorecard Function

Currently, scorecard calculation function is pretty basic. We are employing a 6-sigma prioritization model, where scores are 1,3 or 9 in Impact, Timing & Feasibility and to get to a priority score, you need to multiply the 3 scores to get a number.

I tried to set up a scorecard to do this (so it could be part of a program's scorecard vs a custom form, calculated field.) but the calculation options are really basic. Would love to see WF open this up to increase the ability to add new calculation function outside of sum or %.