Well individual actions do influence the LB (such as critical heals, critical hits with dps, maybe parrying but I'm not sure on that one) so this idea has merit. It's certainly something that was able to be inflicted as well as self prescribed in FFVII, so we can use some alchemist potions to have the same effect. Although what it will end up being is tanks taking tranquilizers for every fight and it loses it's intended use. Perhaps a use that isn't related to LB usage.