Membership Confirmations Pending Payment
This is something I've noticed on a few of our sites.
When registering to become a member and confirmation emails are set up, they are sent immediately after the initial form is submitted. The problem with this, is that it still works this way even if Commerce is being used and members still have to pay for their membership.
This means that the website administrator is receiving emails notifying him of a new member, even though they haven't paid for their membership yet.
On the other side of things, I noticed that when using the Events ticket system with the use_checkout tag, this problem is averted and confirmation emails do not send until payment is received through Paypal, and is redirected back to the original site.
I understand that these are two very different systems as Membership is relying completely on Commerce and a defined 'Product', but is there an alternative way of setting this up so it is more fluid like the Events module, where if commerce is enabled, confirmation emails aren't triggered until the payment is verified?