I guess that shows that sometimes you must step out on the ledge and purchase with hopes of the add-on continually growing. When I do that, I usually check into the author, see what else has been done by them, etc. In this case, this was a member who was creating this for his own site and wanting to get the full potential out of the add-on. A supporter of xF.
I weighed the options and went with my gut.
When I bought my two copies, I was happy with how it was, as it was. The new features are just additions which have enhanced the add-on, and moved it up into that "must-have" category.