Here's an idea that struck me today for P&O (that is 100% wishful thinking and with some levity).
As they are moving toward 'family-friendly' mega-ships, why not spin off the older smaller ships into an adult only brand. "P&O Classic" if you like.
OK, admittedly you've only got Arcadia and Aurora at the moment - but imagine this back in the days when Oriana and Oceana (even Artemis) were in service. You get the gist.
That way, in theory, everyones happy. Those of us who want a medium sized ship with an older style of cruise will have their own niche, and the ones that want the big informal style cruise will also be catered for.
I will reiterate, its not going to happen, but I can wish can't I? 😂