Power BI Metrics - Sub Metric Roll Up Target based on a % target or a calculated column and have weightings applied

With sub metrics you could have 2 sub metrics one with a target of 100% and the other based on 50%. When reviewing the rolled up score it would be out of 150%.

This has 2 issues.

One it means the first submetric has twice the weight of the second list.

Secondly it doesn't make sense for the user as your target is 150%. It would be better if you could allow a score to be used so when you hit 50% for the second one you are 100% of your target and when you hit 100% for the first example you are of course 100% of your target.

Therefore the rolled up target could then be based on 100%

Also having the ability for the sub metrics to be weighted and taken account in the target would be useful.