I don't know where you fly but do you routinely brief your pax that in the event of loss of MRGB lube you will have to ditch, even if the sea state (and temperature) mean survival is unlikely?
since that horrible event, the S-92 fleet has flown 700,000 hours and managed to keep ts oil in its box where it belongs.
shame we have to keep using pax as crash test dummies and wait for deaths to drive improvements.