Enable sync and leverage of SFDC History tables as custom objects

The Salesforce History tables are quite similar to Marketo Data Value changed activities in the activiy log an would be of a great help on custom objects. Unfortunately, trying to sync them causes errors because they do not have a timestamp field. This field are not necessary since history table records cannot be updated. But synchronizing them with appropriate filtres and triggers would bring a huge benefit in detecting and handling changes to Custom object data.

So, please Marketo, enable the sync (without update) of salesforce history tables.

-Greg