Okay, I got mine back and had a chance to play with it for just a bit.
Fuzz volume mod: huge difference here. I was surprised how quiet the fuzz was pre-mod. No trouble anymore! It's still controllable, unity volume is maybe 9:00 now, instead of past noon like it was before for me. Maybe it's just me hearing what I want to hear, but I do feel like mixing in clean and bottom now sounds better with the increased fuzz volume.
Reduced compression mod: I'm going to need a little more time with this one. I definitely noticed the difference, but it's not quite as dramatic as the volume mod. At max gain, you still get into overcompressed madness, but it's more usable than the previous max gain. The overall range of the knob seems to be a little more usable. But again, I would like to spend some more time with this.
Overall I'm happy on both counts and I would recommend both mods.