Pixls as partners wouldn't work - your roster would get way too cluttered, and they're all one-trick ponies. More like you'd stick with the four partners, maybe with Tippy in as the fifth, with some of the other Pixls become her non-tattle attacks, Pikmin-style. You could also keep the flipping - but instead of going from 2D to 3D, it'd warp perspectives and put you out of phase from the enemies n' other trippy stuff like that.