it would be really hard to control two disks simultaneously, plus it would be a big waste of energy. and I know this has been said before but i'll say it here again. disks should be blockable, but only like in the show. ex: a disk can only be blocked if there is enough of a PL difference. say freiza with a PL of 1,000,000 threw a disk at someone with a PL of 5,000,000 then it should be blockable because of the big difference in both players PLs