Tho that's actually another point where the Sigil version differs from the original table top version. Psion has different mechanics and a concentration ability called psionic focus which is always active and can be quickly reactivated. This allows that you don't have things like "discipline focus" since it's not magic.
You mentioned shaper, the psionic repair ability is bugged so it doesn't augment properly but it takes the cost. The construct is more or less copy pasted from the srd, while summon monster ix is heavily improved from anything you could get in table top. The only thing they didn't copy was the construction menu mechanic which is the way that psion buffs their construct. Another thing that didn't make it for metacreativity is the creation powers. In fact you can't even craft at all, there is no psionic crafting.wrote:Psionic Endowment [Psionic]
You can endow your manifestations with more concentrated focus.
Benefit
To use this feat, you must expend your psionic focus. You add 1 to the save DC of a power you manifest.
So it's not just one play style that has to make do with what they got.

