If the 2nd stage at least had a small solar panel and magnetic tether, it could (slowly) change orbits into something useful. Not sure what the weight penalty

If the 2nd stage at least had a small solar panel and magnetic tether, it could (slowly) change orbits into something useful. Not sure what the weight penalty for a minimally viable system would be. For the 2nd stage, every gram counts, much more so than for the 1st stage.