MAD is not a search sensor it's a localisation sensor and can only be used once the contact is being prosecuted and then only if the sub is shallow.
In this case it makes little sense to limit the P8 to flying this low altitude time consuming flight profile and a drone is a useful option whilst the aircraft can continue to prosecute, including weapon release from high altitude.
ack. flight profile for a P8 is completely different to a P2, P3, IL May etc.... the sensors are operating at a different level (and I don't mean altitude), thats why the USN wasn't fussed about a mad stinger in the tail.
ultimately the ASW sensor chain is far more integrated and finessed than its ever been.
I mean does anyone seriously think that the USN P8's are less capable than the Indian P8's with a partial Sea Dragon suite....
I guess the other obvious caveat in here is that the members in here who have done ASW at both the air, skimmer and sub to sub level are going to very cautious in how much detail is let slip
I worked on 3 different sub programmes, all 3 subs were very different in their acoustic behaviour.
the main thing for me is that the peace dividend mentality is over wrt ASW
as a contractor overseas I was lucky enough to see the fighting finger construct discussed. (ie co-op manned and unmanned working in tandem) - if that combination is fielded then there will be an exponential improvement in capability
consider the issues surrounding sea bed arrays, USVs acting as bearer range extenders and as bush beaters and the fact that if your air can hear and see all this going on, then they become a stand off weapons carrier where the sub is less able to know whats going on.
the combat operating picture now includes subsea boxes