Add Condition "Contact is within --- Miles of location"

I work with a touring band who just switched to Ontraport after having used Mailchimp for years as our CRM.

Using MC we would routinely schedule concert announcement emails to fans within 150 miles of the upcoming concert, so as to to not bother the fans who lived too far to make the concert, but to get the word out to those who could.

However, now that I am looking into how to replicate this on OP, there is not a way. So I'd like to request that a new condition be added to campaigns to filter customers based on how far they live from a certain location/town.

This should be quite simple as it seems that you already automatically collect customers latitude and longitude.

Thanks!
Isaiah