I see FC is proposing to have 52 points of fast attack buffed when Mutate 10 is trained. Please reconsider you decision.
From a practical point, more Fast Attack is not needed for enfos for PVM or PVP.
From a conceptual point, Fast Attack doesn't really fit in with the idea of some Mutation perkline that you would think affects the body of an enfo.
If this is open to discussion, I would like to recommend Heal Delta be considered as a replacement (5 per level of Mutate), or a damage sheild addition (10 per level of Mutate). If you stick to the concept of a mutation, you will see that Fast Attack isn't really inline.