However, I'd neither call the 600mm lens hand holdable...
The 600 II is approximately the same weight as the 500/4 MkI, which is generally considered to be a handholdable lens. So, may I ask, on what experience are you basing that statement? FYI, when I stated, "Show me someone else's 600mm f/4 lens that I can handhold,
" I was not speaking in generic terms. I own a 600mm f/4L
IS II, and I assure you that I can
To your other points -- by limiting the market to FF you are essentially defining the market place in Canon's terms (only Nikon and Canon make FF SLRs) Nikon, like Canon have had integrated off camera flash for years. If you're trying to argue that Radio control is new, Pocket Wizard and other third party providers have been doing that for years. Maybe the AF points would qualify.
However the kind of thing I'm thinking of are major technological steps -- things like Fuji's hybrid viewfinder, and their new sensor array design. Magic lantern like firmware features. Mirrorless cameras (something where Canon's entry is too little too late). Sony's SLT technology (which allows phase detect in video mode). Leica's technology which lets them use full frame wide angle lenses with a short flange distance. Usable AF in video mode.
My point on the flash is that integrated
radio control is new. Sure, it was possible with 3rd party products (but I'm still waiting for my PWs to be fully compatible with my 1D X, whereas I'd be fine with the Canon RF system out if the box).
There are many types of innovation. By your definition of 'transformative' innovation, Nikon isn't innovating, either. That's not unexpected - very few large corporations at the top of their field (or near the top, in Nikon's case) do much innovation, the risk:reward ratio is high, and they don't need to take the risk. Rather, they allow others to shoulder that risk, then in-license from or outright acquire the smaller, more innovative company.