After some consideration, I'm... not a fan. They're not bad, but I don't really like the heads, and they look kinda generic. I prefer the ol' noodle dragons. No judgment on those who do like them - I'm happy you got models you like, and I wasn't going to be buying Stormcast stuff anyway!
As for future SC and KB miniatures - there's been no indication from GW that this is it for the two factions' releases, and besides, Whitefang Has Spoken. If we've yet to see SC dragon cav, I think there's good odds we'll see something more for the Kruleboyz too.