I've got a crazy project coming up and I'm considering your plugin.
1. Does it integrate with WP-Members?
2. I will have 16 different groups of checkboxes with a total of 60 different input values as criteria for communication preferences. How many rules could be applied when creating a segment? And, can custom fields be used during list segmentation? I wasn't able to test this on the demo site.
3. Is there a way to hardcode a form that updates a current users's subscription preferences? Reason is I have to use a physical map with clickable regions rather than just input values.