Absolutely have this exact issue on mine. I know others have mentioned engine braking but 4Low in 1st gear is way too fast for some of the steep declines I see, so it's unavoidable to ride the brakes, especially in a group situation where you can't just stop and take a break to let your brakes cool.

My current front rotors have a slight vibration because of this, and were squeaking at slow speeds due to glazing from the heat. I've done a temp fix and removed pads and rotors and deglazed them with 200 grit sandpaper, while also servicing my calipers to ensure they aren't partially seized. This has remedied the squeaking, but obviously won't fix the vibration.

I may have my front rotors turned as a short term solution, but this isn't a permanent solution. My plan is to try EDC Red pads and performance rotors at my next opportunity. I've considered Powerstop but have read several reports that they don't do well with offroading and are more for highway emergency stopping performance of a heavy rig.

I'm in the same boat man, looking for some proof of a solution before dropping $$ on an unknown.

best of luck to us both.