and i think captains should have an ability to spend some type of points for the people in his squad to receive certain boost for example like a captain could spend like 1000 points to have everybody in his squad have an +1% shikai boost or something like that. like let the captains be able to choose which boost to buy like shikai boost, speed boost, & etc and make em buy em buy 1% increments. I think that would be good because it would add a sense of pride for being in certain squads and it would squads unique like players could be like "oh i wanna be in squad 3 because they have the largest speed boost."
lastly i think zanpaktou should have elements too, only to add a strength and weakness effect to battle for example; a water zanpaktou would do more damage against a fire. Im also willing to help anyway i can