Something tells me that Fei Wong didn't do this out of ulterior purpose.
If Kuro didn't suffer this sort of trauma, he wouldn't be this angsty, and occasionally obnoxious swordsman who got sent to travel with Syaoran.
Things don't happen here out of coincidences. Fei Wong must have expected Kuro to end up with Syaoran in the first place, but why Kuro?
Um... Kendappa can very well be just another subject of Tomoyo, like Souma. In RG-Veda, Kendappa is General of the East- JIkokuten, and she's wearing the similar armor she wore in RG-Veda, except it's whtie. I'm suspecting that Kendappa is gonna be Souma's lover in Tsubasa, too... I remember when Kuro sees another Souma in Outo, he starts looking for someone else he'd expect to see along with Souma... Isn't that nice, lovers together till the end