Remapping is a possibility depending on how N-Trig built them. May have to redo the entire controller software as well. So, you cannot remap like you can with a keyboard. If the pens where built generic and allowed the driver to perform the mapping, then a software remap would be very easy. In fact, I think that is what everybody was expecting out of them.
The Pro and Pro 2 had a generic Wacom pen and had the digitizer built into the tablet. I think it only half worked, though. The Pro 3 has no digitizer within the tablet itself and is built into the pen. The tablet only has the controller which doubles as the touchscreen controller as well. I think you can see the direction I am going on this; remapping - forget it.
There was so much interest in note taking that, that is the possible direction for these particular pens. So, for the drawing aspect, it will probably be simplified and like I mentioned; an electronic stylus. It works but it is simple.
Now as a digital sketchbook, that is what this pen is for if not taking notes. You will not have a lot of options but depending on the program you use, it will rely on those features. A sketch is not a mechanical drawing.
After seeing that video of an artist in the UK doing a portrait of Morgan Freeman using an iPad and two fingers and it came out perfect, brings to light of looking at what few tools a person has and using their imagination for creativity. I think that with that pen and the right app, you might surprise yourself at what you can do and you don't really need all those "bells & whistle" features that most programs offer.
Heck, you might even find yourself even doing better work with the free app from AutoDesk in the Store and that pen. I played around with it myself and works pretty good. Add that with Skitch and for mechanical drawings, "Back to the Drawing Board". Along with using PowerPoint for page layout as well.
Who says a person has to be limited!
By the way, here is the web link to the HD version of that Morgan Freeman portrait video: https://www.youtube.com/watch?feature=player\_embedded&v=uEdRLlqdgA4