Cameron,
I'm a Nintex Newb, so go easy. I get that we can use your OTB “create a site” to provision a new site and even set the site owner. Can we define the site template we want to use for the site? Can we use specific web services to create a new MOSS groups that follows a naming convention (i.e., TEX_WG_[name of site])? What about setting the group access level to creator? What about loading users into the group by pulling their names from a user field in our site request list?
http://msdn2.microsoft.com/en-au/library/ms772647.aspx
http://msdn2.microsoft.com/en-au/library/people.aspx
http://msdn2.microsoft.com/en-au/library/permissions.aspx
I get that web services exist. What I want to know is can you show us customers that it will work? Will you work flow gods take the time to show us how it's done by building a proof of concept snippet and posting up some code?