If using a custom score field in place of the default field, say to rename the field, users currently lose the ability to sort by score on the features board. Giving the ability to sort by a custom score field would allow users to replace the field without losing functionality.
Our Business unit is divided into multiple segments Hardware, Digital, Platform etc. and the score equation will be different for each segment. It will good to have custom scorecard as an option to rerank the epics/features.