Hi Ernie
I haven't looked at how CB works in details, so I could not answer these questions. However, I just made small improvements to Members List today to allow select the plans which you want to display members from. That would make it a bit more flexible
I will take sometime to learn how other extensions handle members list (this is not something Membership Pro focus on, the extension's main task is still handles subscription) and if it is possible, improve this feature in Membership Pro
But it would take sometime
Regards,
Tuan