Raymarine ST70 Plus, super all-in-one?

We had a peek at the ST70 Plus a while back, but I got to see them on the water in Miami, and, besides, there's a hot conversation going on about ideal instrument displays over on the forums (warning: gobs 'o' geek talk). My photo --- taken in glaring Florida sunshine, with on-screen crap you normally don't notice included --- doesn't do justice to the display's brightness, VGA resolution, and deep color saturation, but it might actually be more realistic than the glamor shots now available at Raymarine.com. The latter do, however, show many of the Plus's display choices and color palettes. Or "Colours" as they spell it in the King's English, and as mentioned in my shot above. Which does illustrate a bit of the system architecture I was originally confused about (and which is also explained in the now posted manuals). It seems like a flexible and powerful architecture (and hence inherently confusing), and probably a winner...
An ST70+ display can also be an autopilot head unit, a hell of a head unit, if you get either a sail or power pilot keypad. You have to decide if it's a pilot or an instrument display during the install, but pilots can show some instrument info, and instruments offer pilot pages (like those seen on the ST70 pilot head, only much bigger and more detailed) but no pilot control. Pilot keypads and displays have the same flexible control nature as the instruments. Via the manuals, and from Miami, I also notice various improvements over the ST70, like the nifty and configurable racing timer below (sorry, the cannons don't go off, but the beeper notifications sound smart). Some of these will migrate to the 70 I'm told, along with a few new N2K messages the Plus understands, like Bennett and Lenco trim tab angles.
But, like the new C-Widescreens, the Plus still can't tell you anything about what sensors are online, let alone let you choose among them, as is seen on more modest N2K instrument displays from Simrad, Lowrance, and especially Garmin. And here's a question: Why hasn't Raymarine developed its own N2K sensors like the aforementioned brands? And, since it hasn't, why doesn't it partner with Maretron or Airmar, or both, program its displays to do their calibration, and go for it?

Never a greater contradiction in terms than "American English" English is English and Colour is Colour no need for the " " :)