Two mods I would be interested in:
1) Adding a Cree Q5, Luxeon P4/P7 or even a Osram Ostar 1000 so you have a flashlight. The Ostar 1000 will be too large & too warm, I fear. Ideally, the LED would be regulated, i.e. I would be able to control the current to it via software.
2) Adding a...