Spending CP on Feats, DR (Absorption), & Cosmic Power

[starslayer]

I would say yes in both cases, but also in both cases, the points are GONE once spent as such (so very deterimental to a cosmic point pool). You might want to be generous and say that at the end of each adventure the points return to the cosmic pool (mimicking disposable signature gear)

This is of minimal concern to a person with absorptive DR, but it does mean that they only get one instant powerful effect rather then several rounds of slowly diminishing less powerful effect. Since absorptive DR already has rules for recovering HP/FP I would not let any effect that does that be used.