Thanks for using my image. This makes me very proud - as you are one of the most famous HP-Gurus .
So far I tried to see, how much room is on the DM42 screen for a periodic table?
As far as I see there is place for the periodic sytem without Lanthanides and Actinides. And if you want to display atomic number, symbol and atomic mass - it is really a challenge for (everyones) eyes. But it seems to be possible: Is it worth to do the complete drawing/typing work? What do you mean? Is there really a big demand for such a table (I'm not a phycicist/chemist)?