@ - controller-guy
There are no nice TP spots on the Wireless controllers like on the Wired ones, the TP spots that are on this version of board aren't for anything useful. Going right to the spots of the Sticks or Triggers are you're better bet.
The reason they've switched over board versions is it's cheaper to make the controllers now, less parts to do the same job, but still cost ya the same price to buy it so they make more money.
@ - VERTIGONIX
Thanks. Sorry bout not getting back to ya sooner.
I get the Crouch/Jump part of your mod, and on the CG controller that's fairly easy to do, but getting the timing of it just right using a 556 IC will be a real pain and probably not stay in time very well over extended use unless ya use precision components with very low tolerances, and even then I'd imagine it would drift in and out of working just right. Plus if it's not setup just right timing wise it'll start miss firing anyway, too fast to register each set of presses so it may catch the first one, but then miss the first press of the next set causing issues, if ya follow what I mean there. That's something that could very accurately be done using a PIC or MCU though. The 556 idea ya have would work, I just don't think it would hold up after finally getting it all timed up, nice idea though.
Using the Trigger to do the rapid fire how ya have it is a pretty good idea, though it's not really using the Trigger per say.

I may break out the breadboard and a 555/556 and build it up to see how this works out. The schematic is a tad misleading how ya have it drawn up, but I get where you're going with it. Killing the V+ to the Trigger's POT and using the pulsed output of the 556 instead for that line, really nice idea and I see no reason it shouldn't work right now, will let ya know after I build it up on an actual board and see how it goes. Don't be afraid to get yourself an old Wired or Wireless controller and lay the iron to it and see what else ya can come up with.
@ - spankymcgee27
Pics of that version board are in the Tutorials section.