I would like to use the tablet to make a handwritten presentation on a white board, using a connected computer and a videoprojector. It would be then be very convenient if GfxTablet would have an option to show what is being written drawn on the tablet, say just as when one writes on the “take note” app (actually this is much more convenient than raising the eyes to look on the computer screen…). Adding a button to erase the tablet screen and saving the screen as a PDF file (+ sending events in a certain way through the app, e.g. as clicking mouse buttons 2 and 3) would be quite helpful.
In fact, there is a cheap device called “Boogie Board RIP” that does exactly this. I would like to simulate this device (but probably with a better accuracy) on the Galaxy Note. My guess is that the required code might be not very hard to implement in GfxTablet. Of course drawing nice antialised curves on the tablet screen (with a linewidth that can be adjusted) would be a plus.