Warrior General Games

My punter already has at least 10 in every SA. Calm nerves for example is at 11. Now I found a piece of AE that would take calm nerves even higher. Does it make sense spending bonus tokens on it or is there too little effect when they are that high?
Anybody knows?

If you could find one with +1 punting +SA it'd totally be worth it. Or +2 confidence +SA, etc.