There is a difference between Celebrity and RCCI. I don't think blending them into ONE will work, and I don't think this is news to the corporate office either. It's nice to have two lines that can appeal to the different needs of cruisers. It's a mistake to think in the 'One size fits all' box.
Not everyone is excited about the new mega ships. I count myself among those who don't want to cruise on a floating mall....on ships so big they can't even pull into a port, but you have to be tendered. But again that's whats nice about having varity. There's something for everybody!