External ID for Customer Goal Actions

The customer goal object doesn’t currently have a external ID field out of the box like many of the other objects do.  We are looking to integrate some goals from another system into Gainsight, but not having an external ID makes it difficult.  When creating a goal through a rule action it would be nice to be able to put a external system ID in as a field to populate.  Then this same field could be used for updating goals through a rule.  Today, you have to rely on the goal name for the most part and that can change.