Mixed Time-series legend to have the option to include the metrics as well

What is the problem or goal the end user is trying to solve or accomplish?

When we have a Mixed Time-series chart using the same dimension but different metrics, the legend is only showing the dimension making it difficult to tell which is which

How are they solving it currently?

Create a calculated column to add the label manually

What is the recommended solution by the Customer?

Ability to have the option to display the metrics as part of the legend