I actually play both guitar and bass (and drums!). I fill different roles in different projects, and have another where I play guitar through both a bass and guitar amp.

I have my pedalboard set up with two channels. First pedal is the blackfinger, followed by an active splitter which splits into A/B.
Chan A is “bass” with POG>bassballs>superego>bassmuff>mxr delay>orange terrorbass/8×10 and chan B is “guitar” which is Rat>mxr 10 band EQ>mxr delay> custom built 180 watt guitar head (4xkt88)/two x 4×12.

The board works with either bass or guitar, and can make either sound like the other….or both…so I have one board for all my projects. I play Doom metal mega-loud. I think part of our difference in understanding of the pedal is that I’m guessing you probably belong to the more traditional combo+dirtboxes school of guitar playing. I’m from the full stack cranked to 11 school of playing, so I use my pedals very differently.

I see what you are saying, but I really have not run into problems with the overall volume of the pog. Usually it’s just one ocatve that’s throwing something off, and once that’s adjusted the proper volume comes back. Then again….I use it in a very limited sense. I only use three settings, none of which employ the Q, detune, or LP filter functions.
You should not have any issues as long as you dial in the right settings and stick with them.

I run into the same problem with the POG. I find that I have to tweak all the settings when I change rigs/playing environments because different amps respond to the ultra high and lows differently. I run the POG half of my signal chain into a bass amp, with a splitter before it going into a separate chain into a guitar amp. If I switch chains, the settings have to change too. This is kindof obvious though…

I doubt a master volume would work well because the “too loud” is often not the pedal overall, but just one of the octave sliders that becomes overpowering – usually the +2, sometimes the -1. Either of those can become exaggerated when using distortion or fuzz, or flangers in particular with the +2. It’s usually not the POG itself that exaggerates certain harmonics (making it too loud/quiet) but the way the amp or following pedal processes the information. If you add more bass in the input signal on certain amps, they will get bassier, on others, it will get distorted or woofy and obscure the highs. On some amp or pedals if you add treble you get more definition or harmonics, on others you will get more ice picks. Flangers (phasers too, but not as much) make it too loud because it’s essentially a sweeping EQ that works by combining two signals slightly out of phase. Since (due to the POG) the harmonics are not naturally balanced as they would in a normal guitar sound, the imbalance can become exaggerated. Combine that imbalance with the already existing aforementioned dynamic response of amplifiers and distortion boxes, and you end up with occasionally [seemingly, to the uninitiated] unpredictable results.

THere are some solutions to that problem….
1. preset your presets to how you would want them live when you are practicing, then don’t change them. When I practice with my band, we run though the set at stage volume. Nothing changes when we go live except for the addition of mics on the cabs and drums, and we don’t use monitors on stage for anything except vocals – for that we have a PA in the practice space so there really is no difference between live vs. practice. Our stage sound is almost identical to our practice space sound, so we don’t have to do any tweaking save for some minor eq adjustments on the amp heads for the change in room.

2. Don’t use a distortion or flanger after the POG unless you either A. have a compressor after or B. the distortion/fuzz is brick-wall buffered (e.g BOSS pedal). I’d ideally advise against either. An alternate solution without A nor B is to just tweak the settings so that you have a specific setting to function with the pedals that you want on, and a different setting for when the other pedals are off.

an easy band aid for you would be a compressor after the pog. That can function as your master volume, and you’ll be able to tweak the response better than if you stuck some other type of buffer in front to level things out.