[KRX]

Here, let me develop that idea further:

*Every Ranger would have three types of Core Medal, each corresponding with a different Greeed.
*A Morpher can be used without Medals to access the blank Default Form; one Medal unlocks a Super Form (the base form); two Medals of the same type unlocks a Hyper Form; three Medals of the same type unlocks a Maximum Form; two Medals of different types unlocks a Duo Form; three Medals of a different types unlocks a Trinity Form.
*The first Megazord (which I have named MedalOh/King Medalos) is composed of a blue bat, a red buffalo, a green wolf, a yellow frog, and a pink shark.
*The Blue Ranger is the leader, because it's about time.
*The Red Ranger is female.
*The Sixth and Seventh Rangers are Black and White, and play off of an opposites motif (e.g. their initial Zords are a dog and a cat).
*The Yellow Ranger is constantly screwed over in the theme department.
*The Green Ranger is unintentionally the most school-spirited in terms of his motif.
*The Pink Ranger is only bemused with the pink shark thing.
*The colors might be adjusted to better accommodate a possible visible-spectrum motif.