It sounds like you want to allow for the possibility of adrenaline-fueled temporary boosts in combat? Where, due to the effects of adrenaline coursing through your body, you seem to be stronger, faster, etc? Warcry and Berserker would cover part of it, though we don't have anything similar to the WoW tank abilities to temporary grant extra HP, other than by using Occupations items. The only difference would be that you talk to some NPC somewhere instead of a trainer to get it?
That is a large amount of work (including re-balancing, testing, bug-fixing, etc on top of creative writing for the stories) for relatively minor impact. What the devs seem to be doing, instead, is revamping the Encyclopedia (as mentioned here), which is a long-standing player request. The rewards are usually minor or beneficial in specific circumstances, so they don't affect balance to any great degree.
Setting dev time aside, the mechanics are simple in concept and amount to mostly busywork, though you are right that the creative writing will take longer. However, when and where do you apply this type of "bonus" ? If it is automatic, it's just another critical success roll. If it's manual, then it's just another Warcry/etc ability.
Perhaps I'm not completely understanding what your intention is, but this doesn't seem like it would add much to the game.
That is a large amount of work (including re-balancing, testing, bug-fixing, etc on top of creative writing for the stories) for relatively minor impact. What the devs seem to be doing, instead, is revamping the Encyclopedia (as mentioned here), which is a long-standing player request. The rewards are usually minor or beneficial in specific circumstances, so they don't affect balance to any great degree.
Setting dev time aside, the mechanics are simple in concept and amount to mostly busywork, though you are right that the creative writing will take longer. However, when and where do you apply this type of "bonus" ? If it is automatic, it's just another critical success roll. If it's manual, then it's just another Warcry/etc ability.
Perhaps I'm not completely understanding what your intention is, but this doesn't seem like it would add much to the game.