I'm gonna copy paste my idea on disc from the post called "The Disc"
I think that frieza's and cell's disc should be removed. They have other good attacks, they don't need an insta kill. The series is composed of weeks of laser shooting, power punches, karate kicks, and power struggles (outside of the hours of dialouge). The characters are made to take a beating and keep going, so it's fun to take a few blast and dish a few without death. The disc is quite cheap, one hit kills ruin the game for many people.
I think Krillin should keep his, but he shouldn't be able to move once it is charged. So he launches from whereever he charges it. (only reason is because all his other attacks suck majorly)