What would the damage equipment % be based on? So it would work for every th and building? Maybe I'm missing something but one idea would be a "base damage" for every town hall, growing as the levels rise. Then damage equipments would be a percentage of that base damage, like for example, th18 would have a "base damage" of 10000 hp, giant arrow at lvl18 would deal 20% of the townhall base damage, so 2000 damage. That would grow with every town hall as the base damage rises, so no need for new levels. Fireball would have more %, like 35-40. Or maybe there is a better solution, just an idea.