Pros:
NORG and the Cid's wife twist
Seifer's character
Rinoa is very pretty
The soundtrack
The Ragnarok scene between Squall and Rinoa
Sorceress Adel
Ultima Weapon

Cons:
Almost everything else, including the fact most of the story makes no sense. Why has the Centra, the greatest power in the world, faded into complete obscurity...in less than a century? They built the Gardens, were around for millennia, and nobody knows who they are because the Lunar Cry wiped them out a measly eighty years before the game. That is NOTHING.