A bit of a common sense check on *IPL0 on the GLU, since we also have the BBU connecting to *IPL0 via a +5V pull-up resistor, this value should only ever be high-impedance or GND, correct? If so, that common sense can certainly take a chunk out of the complexity of the OE equations. That just leaves FCLK.oe as the exceedingly complex OE equation to be dealt with.
The reason I ask is because I've had issues with using caps that are 'out-of-spec' so to speak. The suggestion is that you can use higher voltage caps and it's no problem, however I've encountered problems doing that. I recapped a Q610 with 20 or 25v (can't remember) 47uf caps, instead of 16v, and SCSI wasn't working, the startup chime was a bit weird, and flashing question mark took literally 5 seconds to blink each time, instead of just 1-2 seconds. All caps were 'good'. I removed them all and replaced with 47uf 16v, ones that I have hundreds of for other Macs, and the same Mac was perfectly fine.
The other difference was the resistance of the caps.