Sorry to have to publicly address this, but I forgot your Email address.
I remembered one more thing that is missing from the Psicrystal OS.
According to the srd ( http://www.d20srd.org/srd/psionic/monsters/psicrystal.htm
), Psicrystals have a Hardness of 8.
This might best be implemented as "DR:8/- (Hardness)" as Hardness works like DR and this gives a common sense (IMHO) placement on the Character Sheet.
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