I think Membership Pro would be much improved, as far as ease of use is concerned, if you added the option to import existing users to a membership plan. Many sites have been established for quite some time, and importing users with ease––right within Joomla––with Membership Pro would be a plus. The CSV importing is good, but most common customers don't have the skills needed to make sure it gets done correctly.
I posted a review on the Joomla Extension Directory because I was very well impressed with your support. It was awesome!
Walter, a.k.a. CoalitionGuy