Make the filters and sorts persistent

FineDog

The most obvious example of what I'm asking is in arena. Say you're doing the 2*/3* arena and you only want to use your 3* champs. So you go to the character select screen, filter by 3* only, sort by PI or whatever, do your three fights, click next series to go back to the character select screen, and now you have to filter and sort all over again. It only takes a few taps but when you're doing a dozen series in a row, it gets to be a pain in the ass. It should just keep the last filter/sort that you had until you click the reset button.