ill give feedback here, first of all i would like to say any site powered by joomla is kind of a joke all in itself. he should come up with something original. an important part of drawing people in is that it has to better than whatever else is out there... but i dont see what is better vs xfire.
at least he got a domain name, go the extra 90 yards and make an original website without a CMS and maybe it would look more professional. its got the fly by night look, nobody wants to signup for that... my opinion of course.
its just a personal thing of mine that i dont sign up on sites with CMS. good luck with that Mini Civ team. (aheaheahahe)