Personally I would never go for this option. Yearly, maybe, but not "Lifetime". That said, I'm not against the idea of providing the option for those who would be interested. However, I think it would be a mistake to offer it right out of the gate with this game, especially after its 2010 launch. Give it a year or so, maybe wait for the first official expansion, then start to provide that option if there is a large enough following. Just my thoughts on the matter.