Email logs not accessible in bionic rules

I've just recently been told that we are not supporting the use of "Email Logs" in Bionic Rules.  

Is there a plan to enable this in the future?  

I have a customer who would like to use Email Logs as the source in Bionic Rules.  In their use case they leverage Emails logs to update items like Probability on the Opportunity records and it would be helpful to be able to join Email Logs with Opportunities so they can only update records when it is appropriate.

Is this something that we anticipate we will have the ability to do in the future?

Thanks,
-Tom