I think I have an answer for your aggression button. After assigning ~370 SPs today I would say that it's random.
For some players it was 1/5, for some 2/5 maybe there was one who go 3/5 (didn't quite capture it) but there were also player who got aggression 1/6, 1/7 times...
And my favorite After aplying 10 SPs to physical & mental still nothing added to aggression:
Best post I've seen about the dreaded Aggression button!