Personally I like the idea of using Power Projection from Com.
If you have ever used RM then it would work like the Channelling skill.
i.e.
if you want to absorb PP then one person projects then at you and you use Projection to absorb them.
It would be an extremely hard difficulty and each person rolls percentage.
So if one person power projects 100pp and rolls a total of 120 then the percentage is greater than 100 so he sends all 100pp to the other person.
If the other person rolls 75% from a total of his roll, then he only absorbs 75% (i.e. 75pp).
The question remains if the person uses personal mana then he is getting more mana than he is normally able to consume. Should be take 1 Hp for each PP absorbed since his body cant normally absorb or use these extra pp's?
Just throwing it out there...