Agree, my favorite, the Pacific, is gone.
My ranking of the current fleet:
#1 - Coral - Smallest and least crowded ship with almost all the Princess features we like including the International Cafe. Lacks Skywalkers but has the Universe Lounge.
#2 - Sapphire - Next smallest ship. Extra wide Promenade deck. All the Princess features we like including the International Cafe and Alfedos.
#3 - Grand - All of the features we like except Skywalkers.
#4 - Diamond - Sister ship to Sapphire but lacks International Cafe and Alfedos.
Next in line would be the "Super Grand" ships - Caribbean, Crown, Emerald and Ruby. They are very similar to the Sapphire and Diamond but they have an extra passenger deck adding about 500 passengers.
We do not care for the Royal class ships - Royal, Regal, Majestic, Sky, Enchanted and Discovery. They lack good forward and aft viewing areas, have small balconies and seem more crowded. We do have a cruise booked on the Sky solely due to a unique itinerary.
And last would be the Island Princess. It was identical to the Coral until they butchered it by adding about 100 cabins (200 passengers) while removing one of the 2 show lounges and burying the gym in an area with no windows. Also lacks the International Cafe.