I saw a slide somewhere recently - there are already plans for this as an artillery shell or missile. I think it was combined with ordinary ordnance- drone is ejected before main weapon payload towards end of "flight". Drone helps pick highest value target then is used after for damage assessment. Presumably then it self destructs or/or kamikazees
Cruise missiles with submunition dispensers are not exactly a new concept. It's certainly possible in theory to stick some smart loitering munitions in a Tomahawk but that's going to be extremely expensive and not reusable.