I would love to see this integration too! It would be a wonderful combo! Without it I am having to rethink my whole process...do I drop MemberMouse and switch to Ontraports membership plugin (which I don't think is as good) or do I drop OntraPort and go back to trying to piece multiple systems together. Hoping and Praying this integration gets the attention it deserves!
Check out WP Fusion... https://wpfusionplugin.com/, it connects a bunch of plugins to CRMs, including connecting MemberMouse to Ontraport (https://wpfusionplugin.com/documentation/integrations/membermouse/). Open source, one time payment.
Thank you for your input! Even though MemberMouse will not be implementing this suggestion, your feature request provides valuable insight into the needs of our community and helps shape future plugin decisions.