One can imagine that for remote sensing like real time tracking of moving objects it is more efficient to have the nano sats with optics flying at lower orbits

One can imagine that for remote sensing like real time tracking of moving objects it is more efficient to have the nano sats with optics flying at lower orbits and have processing done in sats in higher orbits. This way the resolution is higher with the same optics while the compute resources can be pooled in larger, more powerful sats in more durable orbits.