[XorNot]

I mean the other way round: rather then combat drones launching missiles, combat drones which use stealth and speed to close to dogfighting distances with aircraft and engage with their own cannons.

It may be that risking some drone airframes for a higher overall kill rate becomes worth it when you're at no risk of losing the pilot, and could be more affordable then the missiles you'd otherwise have to expend (e.g. when you get to things like the Meteor which are very expensive and also use up jet engine components you might otherwise want to put on somewhat more reusable drones).