What is the Status of Pro-Sites?

What is the consensus on Pro-Sites? In my experience, it's completely broken.

I created a new site, granted it permanent Bronze status, and Gravity Forms is a Bronze extension, but never shows up in the subsite. Even when I try to activate ia manually as Super Admin, no dice.

Only when I set GF to Anyone does it show on the sub-site. This is not the point of Pro Sites, as I understand it.

I do have WHMCS Provisioning and Integration, but those are not involved in this scenario. I am just trying to do the simplest possible thing that Pro Sites promises to handle, and finding no joy.

Ideas? Tips? Things to re-do?

Thanks in advance.