Just looked at everything with a questions mark and tried to give feedback where I could.
Dampen Psionics Discipline
Concentration: dispel at 1 level higher and increase the effect of the null field by 1.5
Astral Construct Psionic Discipline
Concentration: astral contruct gets +10 movement and +2 hit (basically any bonus to the contructs abilties) or the ability to cast powers (that cost 4 points or less) through the construct)
Mental Anguish Psionic Discipline
Concentration:

You are able to block the pain of most wounds (DR 1/-) or you can block pain and fight when your HP falls below 0)
Leech Psionic Discipline
Concentration: draw in mental energy from the surrounding environment (you gain 1 power point per round or minute or hour) something like that
Viewing Discipline
Concentration: some plus to spot and listen (maybe +5)
Reading Discipline
Concentration: +5 on checks such as knowledge (we could also include bardic knowledge in this) when holding an object
Control Discipline
Concentration: maybe a way to help your self like lower exhaustion to fatigue or fatigue to normal
Summons Discipline
Concentration: give combat bonus or movement to a create you summon