I hope I don't sound like too much of a jerk when I suggest that if you really wanted to help, your time, rather than being spent writing highly-theoretical posts, would be better spent tracking down schematics and highly-experienced electronics nerds. My post was made after seeing the service manual for the Pioneer CLD-D925, and after poring over the schematics for a while, and after tracking down pinouts and spec sheets for some of the (now-obsolete) ICs inside the 925. I'm not sure what you expect, but there is no yellow-highlighted trace labelled "Perfect Video" and a big dot labelled "Tap Here for PAL!!".
It's great you're enthusiastic, it's laudable that you want to help, but at some point mere theoretical second-guessing doesn't add much to the equation. I'd be the first to jump onboard with your ideas, if they hadn't already been thought up elsewhere first. Oh, that's just me being modest: you can check out my post in the ultimate LD thread. So rest assured, we've got top men working on it now. Who? Top men.
I have read hundreds of posts in dozens of threads here at OT.com during my getting-up-to-speed research phase, and, although I arrived here at OT.com a little late to get involved in any recent unpleasantness and thus have no personal grudges, I know you must be aware you have rubbed some people the wrong way. Posts such as yours in this thread may threaten the fragile ceasefire that seems to prevail at the moment, and that may send some long-time members with lots to offer away for good. I would suggest that is not a great position for someone with no equipment or funding to find himself in. Please tread gently.