Crab
May I suggest that you contact some of your old colleagues that have flown the Bond Jigsaw Super Pumas and ask them what they can do with their kit? I think you will be very surprised at how flexible their kit is, and it is much better than the SN500/501 equipment fitted to the S61/Sea King 3A.
I would also suggest that you pay them a visit and just see what is available to a commercial SAR operator these days and what will no doubt be on the SAR S-92. I agree with Night Watchman with your apparent contempt for civvy SAR. You do appear to have a large chip on your shoulder about it, no matter how many times you try to say you don't.
By the way, the fact that there isn't a 360deg radar doesn't mean that you cannot get the job done. At least the S92 and the Bond Jigsaw aircraft can see straight ahead without having to do 30deg turns to clear the blind arc every few miles! That to my view is much safer and better.