To be able to use different metrics for the same column. Example: To show the exact sales for our Ecommerce in one single column, it doesn't matter if they're from Shopify or Woocommerce.

Currently, we have to add each one separately according to the source, then we get empty Sample fields that make the Overview look bad.

Another example is Klaviyo: When using a custom metric (like summing up Flows + Campaigns Revenue), IDK if it's due to API or what, but only the original client used for the custom metric gets the data, the others get deprecated.