I will second someones post advising not to follow OPs post. Math was done - I wont go over that again. But the general idea is - It's a pain just to change the mood into the correct one after changing my main (even with the ~100 meat* I had from events). Now imagine rolling a cool new ninja that you want to use and it has Nin stat, while all of your 60% of your team was Tai. Now you are replacing a Tai Ninja with Nin - good luck farming for new magematas.