I Am Legend

Ok, I was just watching i am legend and like they should come out with a second one because like what if the cure only worked on that one and/or what if like since the disease adapted and they became like alot stronger and killer likie intinks? Like they have to come out with a second one. Ok what if they also like started spitting acid or something that would be friken awesome. :) Haha Just my opinion on that. Haha