I did consider the elemental connection when I made that reply, but I feel like it's possible to create a connection between almost anything in Warcraft lore if you go through enough hoops to make it fit.
I'd be very confused if Shamans were the only class to get a skin themed around dragons in a dragon-themed expansion. It makes no sense to me and seems like a complete waste of the entire concept. Even if it wasn't meant to be a class, I'd much rather have Dragonsworn be the end-game progression system for 10.0 than a class skin for a class that has no relation to dragons.