Ok, so I have a system in my game where inns serve more pseudo-realistic purposes than in most video games. Instead of being fully healed from everything I want it to heal everyone's hp by 10%, mp by 20%, remove some negative states and fully restore your rest and exposure levels (basic needs and such) also inns have the option of being able to purchase hot meals, and you can switch parties at them. I didn't think this would be a problem at all, as there are options to restore stats by a % in the maker, however these options only appear in items/skills effects (for some very strange and unknown reason.)
Now I know that this effect can be achieved by variable manipulation as well, and I resolved to do this until I realized that doing so would also restore the hp/mp of members that are not currently in the party. I guess I'll still do that if it's the only way but in a game with three parties adding checking each individual actors current/max hp and mp values and restoring them only if they are in the current party while checking everything else as well gives me a headache right now, then doing it for every inn in the game, some of which have fewer or more options than others and I'm left wondering why the hell you can't just easily do these things as a % through events as well.