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:
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