MUST have powers for Psychic Warriors?

[Dacia Brabant]

Well if you feel like burning a whole lot of feats, you could go into Psychic Weapon Master to be able to have three psionic focuses active at once--one from yourself, one from your psicrystal and one from your bonded weapon. That would cover three Deep Impacts in a round, which is probably the most you'd ever need, but as I said it's very, VERY feat intensive.

There's also an Elan feat, I think Elan Retainment, that lets you retain your psionic focus after expending it, but it's only 1/day. And there's a feat in ToB that lets you regain psionic focus as a swift action but I'm not sure you can use a swift action in the middle of a full attack. I'm not sure of any other ways to do it.