icd2 clone?

now that i've finished a pic icsp, i wonder how hard it would be to make an icd2 clone for debugging. i've seen a few versions out there, but they all look somewhat complicated. this one is probably the simplest i've seen, but according to the author, it worked with mplab 6.5, didn't work with 7.11, and hasn't been tested with other versions. i guess i'll wait until someone smarter than i (and with more free time) comes out with something that does more in software.