All the active station keeping required for small satellites in low orbits makes me wonder how much precision would suffer. Perhaps doable but requiring so much constant self-calibration that quality breaks down in areas without a network of active reference base stations? It's difficult to guesstimate the impact with magnitudes so far outside human scale.

Low... I wouldn't be super surprised to discover they already have capable hardware onboard. Although ground receivers would need to use different frequency ranges and therefore it would probably be a non-starter.

Good point actually. That could be a nice value add