Storyteller01 said:My original plan was to re-instate the Heighten Power feat from 3.0.
Don't do that.
Exp Psionics redid the mechanics for psionics totally.
Exp Psionics introduced the Psionic Focus as a means of balancing the metapsionic feats (and various other psionic feats as well).
Heighten Power is a metapsinic feat and thus would expend your psionic focus whenever used. It normally requires a full round action to regain your focus, with the Psionic Meditation feat it requires a move action. Prerequisites for psionic meditation feat would require a manifestor to be at least least 4th level (minimium 7 ranks in Concentration) to be eligible.
Unlike sorcerers, who can place as many metamagic feats on a spell at one time (still full round action and spell slots total up) but a psion can only do one metapsionic feat at a time since each one requires spending the psionic focus, which is lost the when the first metapsionic feat is used.
Basically the psionic rules are so different for the expanded psionic system that attempting to mix and match the "old" rules with the "new" ones will really mess things up.