I think that its fine to keep sprint and evade. i think all others should go and bring back halo 3's pick up power ups. j-pack can go all together. although i do believe that they should give players the option to pick mainly between sprint or evade. maybe have the option to pick one or the other in the customize armor page and stick mainly with that skill until changed. and overshield, inviability, and CPU, should all go back to a pick up power-up.