since archer's abilities were changed, maybe we can also change the token and principle. what imean is that make tokens like guns and principles its bullets

the person will be allowed to chose what amount of principle he will use in battle (another slider for principles), not exceeding his current principle. then after the fight whether he win or losses he, he will lose the amount of principle he used in the fight, ofcourse principle that were only used.

and also, the expi-principle ratio will be a little higher, since the amount of principle may deplete

I think it is one or the other. Having both will be really bad. You get drained really fast but gain not as much. And on the downside of losing "bullets" all principle will get depleted from profile until we have to sacrifice creatures. And so the more token you bought, the more pissed off you are going to be. Just stating my opinion.

on the other side. you can choose to 'bullit, your prenciples, having your enemie weaknesses for principles he doesen't have. but makes you lose lose a high amount of the prenciple if the enemie has none and low amount when the enemie has more. and the prenciples you lose, will be added up by the enemy..