I can't easily test this yet, since none of my full psi characters are there just yet, but with the additional veteran levels and the Empowered Psychokinesis feat, it should be fairly trivial for a dedicated psi user to go over 275 skill and hit the 75% damage cap of Implosion, at that point casting Empowered Psychokinesis would have no effect on Implosion at all. I would suggest raising the cap a little to keep Empowered Psychokinesis relevant for the top Psychokinesis ability.