We really are overdue for mines with IFF and can inert themselves temporarily for blue ships.

The problem is systems like that have a failure rate.

Self deactivating land mines exist - and sometimes fail to do this (3/100 was the rate I heard a few years ago).

Same problem with cluster munitions: it's not how they work. It's that a bunch of the bomblets fail to work, then leave UXO around which explodes a child's hand later.