Before the update u had to do much less than 10 fights for 1 lvl, so new Players are at a large disatvantage now ( way less Money at the beginning from villains cuz low lvl)
i think as far as the new villain grades go it is ok to do 10 fights per lvl, but it shouldnt be like this for the first stage(grade) of the villain
fredy sih roko sensei for example would take more than 1600 fights to unlock stage 2
just put it back to what it was before for grade 1 of the villains and leave 10 for grade 2,3,etc.