I'm laying claim to the Dragoon idea because I'm awesome . I'd elaborate on ideas if I really felt it necessary, but it's not, so I won't. I laid out class ideas before for WoW (if you search my post history you can probably find ideas pertaining to MoP, but that's not worth it..was more reasoning as to why they could be added, didn't relaly touch on what they'd do xD) and it was fun because there was an incoming expansion. But...to really fan out this idea would require less work being done at work, which in theory sounds fun, but this thread is half people bickering with each other over something (sorry, didn't really read it since it wasn't a cool idea/class named)...so it's not worth it.
I'll throw in things here and there but I probably won't lay out a class design. Breathing fire, jumping, magic, lances...all easily attributed to a dragoon/dragon knight without much thought. Everyone else is doing well with their ideas. Go team!