And now I’m thinking about a Dual Adept PrC. That led me to wonder if it should be a 5 or 10 level class. Then if an end-cap PrC akin to Master of Nine could be built.
The idea (from Skills & Powers option Psychic Adept (10): The psionicist receives extra powers according to the table below instead of the Psionic Progression table in the Skills & Powers book. The two disciplines the psionicist chooses at first level count as primary disciplines (see Skills & Powers, page 154).) so that a Psion can select discipline powers from another discipline.
In a 5-level chassis, he could gain a bonus power from the selected disciple two levels lower at 1st, one level lower at 3rd, and at 5th of equal level and then can make selections from that discipline from that point forward as normal.
Things I hate about psionic PrC’s in other official material: 1) almost all of them skip manifester levels, so I’d want to avoid that. 1a) most of the class features are garbage.