I can't say that I read all of the psionicle game, but I did drop in and skim some from time to time. I would definitely be interested in a game inspired by it.
I have a few questions, if this is going to be a psionic centric game, are you going to use the psionics are different rule? Are you looking for background (which will be easier to craft once more of the game world background/campaign focus is posted) or mechanics? Are there things you wish us to shy away from, things you are not interested in exploring in the game? (The immediate thing that jumps to mind is Evil characters, but it covers a lot like the no loner clause or no ECL races). Other than the psionic bias, are there things you do wish to see explored in the game?