I've noticed on some SATA to 4-pin molex connectors that the "orange" wire is missing. I know the orange is a 3.3v wire. If the HD is capable of running without it, why is it on the actual SATA power ...

Something like this? As long as you have four SATA power cables coming off of the power supply, that would avoid the right angle issue. Why the heck would they design the HD drive cages to oppose the ...