So, having played a bunch more Midori, I have more questions! First, this guy is really fun to play. He feels less oppressive than Rook while in human form, and then there's this big "o shit" moment for your opponent when you activate Dragon Form.
One thing that I had to get used to was that Midori's throws don't knock the opponent down. This leads to some incredibly fun stuff against Grave specifically: if Grave presses ground.C after getting thrown, and you pressed ground.B immediately after having thrown, you'll fly through Grave and land fast enough that you can just throw him again. That alone is pretty great.
This normal-throw property gets really interesting if you've cornered your opponent and they don't have (or don't choose to press) an invulnerable reversal option. If they stand still, you get chop for free, and then potentially some slaps damage or chip, and if they don't, you can go for another throw immediately?
You get a similar, but scarier situation in Dragon Form, where it doesn't even matter where on the screen you are. If you throw them in human form, mash super, you've got either toward.A into A (bite + fireball) if they don't block, or immediate C for the running throw if they do, or B for headbutt to get their jump?
Having super on-deck against jump-ins is also great, since you can activate and then double tap A for anti-air into launch.
His neutral jumping.A is a ton of fun to play with too. Lots of fun mobility on it!