Hi Sam,
this would be a very interesting addition!
Maybe you have heard of LIGGGHTS, www.liggghts.com which is DEM based on
LAMMPS. I don't know if the LAMMPS folks want to include that in LAMMPS, but
I would definitely be interested to include that to LIGGGHTS. Just send me
an email through the contact form at www.liggghts.com so we can discuss
further details.
Best regards and thanks,
Christoph