About the klone leg, I think it's ok for it to have a more vertical hitbox, but IMO the klone model should've more of a "heroic pose" in the sense that it should be a firm statue, could've some menacing pose or something, but the front should make sense for a linear hitbox. It would be fine.
The main problem I see is the extended leg being misleading rather than the klone not working, so that's why I think the pose should be different.
Ok but what...
That slide (at about 7:39) completely ignored the clone.
That one is easily explained as wake up slide has a lot of invincibility frames, so it's intended (this is why you need 100% safe setups for your corner game as wakeups ignore the klone).
Wow I've seen that in the movelist before and I didn't trace the reference until now... well played NRS!