While having a good story is good to a game it can also be the worst possible thing. For instance FFVII has a great storyline, and takes a long time to finish. Other games will have a good or decent storyline and take about a day to finish. These games are terrible because 1. Linear gameplay (Storyline) and 2. You finish them so fast that you remember everything perfectly, and since you just beat the game you are not so eager to go back and start again. FFVII is great in that it requires hours of gameplay, and so you are left remembering the begining of the game only fairly well, etc. So there are pros to having a story, but when it isn't played out right it will fail. Secondly, I couldn't imagine playing the default Rebellion with a storyline... It would completely ruin the freedom of playing the game your way because in having certain objectives that advance the plot you lose a lot of gameplay mobility... So yeah, for this kind of game I prefer no storyline.