Note: I'm only covering Core, APG and UC for feats and traits. I made mention of PSU races but I won't be covering that book any further, as I don't own the book and trolling through the SRD gets annoying fast. If you play a psionic race, I'm sure you can pick out for yourself what's good or not.
I wouldn't until PsiEx is released anyway - The most likely candidate for psionic gunslinging would be a Marksman.
First, please don't start threads with ideas you don't support just to see what reactions you get. That's almost the definition of trolling.
Second, the whole "blue text" thing is not a forum rule or even a recommended procedure. If someone wants to do it in their own posts, fine, but everyone should stop telling people that they "need to" or "should have" posted in blue just because they're being sarcastic/ironic/whatever.