I think its a waste of time for Joel and 4D Rulers, there are lots of free games already out, here is a site with some of them.
http://freefps.blogspot.com/
I will play it cus its free and at least servers will have some people playing, if he improves the graphics with the AMP II engine I could see him maybe selling some AMP II licences, but as far as making a shitload of cash from it I cant see that happining, not unless he hypes the shit out of it, if it was included in a Maximum PC mag CD or something like that it may get enough users to get some ad companies interested.
For those of you that dont know about it this game is ad supported and is pretty cool.
http://www.kumawar.com/
Joel is prolly a Bi-Polar headcase, he is all over the fuckin place with what he wants to do, i wouldnt be surprised if one day he just says, hey guys i have decided not to do the free Gore version and we are now concentrating on a kick ass version of MP Freecell