On the technical end, you'd have to
- Remove the V/S components, and pick a psionic display instead.
- Possibly add an augment like "For every 2 additional power points you spend, the save DC of this power increases by 1" to a lot of spells. This was one thing I really did change in the psionic system.
Apart from that it should more or less work.
Be wary of things that increase manifester level, though.
The way I did it, augments tend to duplicate the effects of higher level spells, so you may end up with players getting access to level-inappropriate abilities if they get their hands on powerful manifester level boosters.
(Of course, if you're going to use reflavored Psions, I'd recommend you just use thereflavored PsionWizard class I made, but I may be biased. )
Yes, it isn't as different from the Wizard as I'd like. =/
Spell Flux, you say? Interesting. I'll look into it when I get back to my own 'puter!
Thanks.
I'd definitely need to change how it increases your caster level, though. But adapting it would be a given anyway.