Marketo Measure: Custom Revenue Amount w/o CRM Automation for Buyer Attribution Touchpoint (BAT)

Marketo Measure currently supports the ability to use a custom revenue amount field, but it does not apply to Buyer Attribution Touchpoints (BAT). 

In order to do this, an automation in the CRM must be set up to duplicate data from the custom revenue field into the bizible2__Bizible_Opportunity_Amount__c. This is a poor design for the CRM to duplicate data and can affect performance in more mature systems. 

Since MM is already pulling this field for other areas of the system, could the integration be updated so that a custom automation in the CRM is no longer needed?