We were on the Tahitian Princess three years ago, and again this past March. I don't think that it needs any TLC, but that might be in the eye of the beholder. Remember that the Pacific Princess is only a Princess ship half the year, then she reverts to P&O, which is also owned by Carnival, for the other half of the year.
BTW, Swan Hellenic Line is operated mainly for Brits, and has a slightly different configuration; no minisuites like there are on the Tahitian Princess. Swan Hellenic is also owned by Carnival; since it's a one-ship subsidiary, I've been wondering what it will do--obtain another ship, take over one of the older Carnival or Costa ships, or just go into oblivion. Has anybody heard about the future of Swan Hellenic?
We're booked on the "new" Royal, departing for the Black Sea from Rome 7/7/07.