Refining MailChimp integration

Hi guys,
My membership site is almost ready to go. I have a question (I already checked with MailChimp about this). On the MailChimp integration, is it possible (soon) to have the integration allow you to choose a group within my list? Right now, I can only choose my list.

I want my new members to be added to my new member group within my main list, which would then kick off my onboarding emails.

Let me know if this will be possible any time soon, or I'll have to create a workaround. Thanks.