by Meat
My daughter and I are working our way through the managa (she's caught up, actually, I'm lagging a bit). While I don't quite have the deck-design chops to make a workable hero or villain, I'm reasonably confident that I could enlist her to help playtest.And if there's help needed in assembling the artwork, I could lend a hand.
Perhaps check out the manga for inspiration for the "second tier". I don't know how it compares to the anime, but many of the characters have their chance to shine, and have reasonably fleshed out backgrounds and motivation.