Well, I honestly do hate to make shameless plugs, but it's a free e-zine and might have some stuff you like so tht's enough to settle my moral qualms.
In the April/May issue of
Ethos, I'm starting a regular column called Psicraft. I'm beginning the column with a series of articles presenting new options for all of the psionic classes, starting with the soulknife. It has new feats, variant class abilities, couple variant classes, and even some soulknife-based flaws. It's the sort of column I'd love to have seen in (or even written for) Dragon, but with their greater focus on the core of D&D, I don't see something like that being regularly in that magazine.
A basic run down of the articles in that issue of Ethos can be found
here.
Anyway, just to end the shameless plugging, I'll second that I'd love to see new material for psionics in Dragon as well. Either single big articles or even something small but regular, like a Class Acts for psionic characters (even if it is just 1 class act that rotates through the classes) would be fine for me.
Dunno if you have already posted there or not, but Paizo has a forum dedicated to articles requests for Dragon. Might want to let it be heard there as well.