Availability is much higher, so that opens the door to use by non-state actors. Stealth is probably also higher. I suppose the combination, i.e. missiles delivering cluster-type munitions (releasing hundreds of drones instead of hundreds of bomblets) is what state-level militaries would pursue.
Little-known fact: cluster munitions (essentially, hot-water-heater-size cylinders packed with hundreds of small devices) were originally developed for the dispersal of chemical and biological warfare munitions over wide areas.
