Ability to charge for access to forum/site upfront during the registration process BEFORE guest becomes a member. Right now, a person has to register as a free guest first then figure out how to upgrade their account. That works fine if you have a site with open forums and some premium upgraded forums. But what about if your whole site is premium and you want to charge for access upfront before entry? I think this would be a popular addon for those people wanting to run a private paid membership forum.