I am so in love with the idea of this model. I hate playing any game online and frequently feel ripped off when I have to pay full price for a game I just want to play through in single player while knowing they spent a good chunk of development on the multiplayer that I will never use. I'm paying for crap I don't want that's packaged together with things I do want and this model would fix that.
Ofcourse, the question is whether or not developers are willing to let people like me get away with paying less for the same product simply because we're not going to use parts of it. After all, the development costs are the same. Sure, more people might be willing to buy it, but some of the people who would buy the cheaper version are currently buying the full version. I'm not sure the extra sales would compensate the loss of sales per game. Still, I hope they at least try it before worrying about this.
Ofcourse, the question is whether or not developers are willing to let people like me get away with paying less for the same product simply because we're not going to use parts of it. After all, the development costs are the same. Sure, more people might be willing to buy it, but some of the people who would buy the cheaper version are currently buying the full version. I'm not sure the extra sales would compensate the loss of sales per game. Still, I hope they at least try it before worrying about this.