Ok, well until that becomes practical, here's what i've got:
I used a generic disassembler to reverse engineer the Start.dol file from the NTSC Luigi's Mansion iso I had, giving me a hex source tree file (the most basic of basic binary source "code", it looks like this)
After dinking around in terminal messing with different binary source tree protocols and entry points for the ASM file, I have a successfully disassembled stage-one assembly file of the "Start.dol" binary (it looks like this)
So what this means is that once I reassemble the stage-one ASM into a full-stage ASM file, I can compare the NTSC file to the PAL file, which should yield the different modes of video switching. I can then reassemble them as a entry point specific (for Luigi's Mansion) patch for the BIOS, have SS test it, and then have someone that is epic at programming GC isos root it to the FS and patch it to the GC via an update or patch iso to be run off of the Wiikey. Heck, Ashen could have the Wiikey team patch it into their firmware update (although I doubt it.)
Anyway, so I don't have to download the stinking 1.4GB PAL iso, can someone provide me the PAL LM Start.dol file? Thanks.