CSM in Email Logs Object

Many times I find myself needing to know the CSM for the account that was emailed a campaign. In the current state of the Email Logs object, we would need to add a column for this and map in the CSM via a rule. 

However, this creates another rule that needs to be maintained. It would be great if the Email Logs object could be joined to another to be able to do this lookup in reports.