Everyone can still learn Ultima, even if you take Ragnarok as a sword. Uncursing the Cursed Shield gives one the Paladin Shield, which, among other awesome attributes, teaches Ultima.Originally Posted by ThroneofDravaris
Also, Terra automatically learns Ultima at Level 99.
As to the MP bonus provided by Crusader, I meant that it had not been stated that it is the best way to raise MP totals. While high MP is not really necessary if one has an Economizer, the bonus is useful if one wants to stat-max.
There was no Omega Weapon in FFVII. Omega (Weapon was not part of the name) was a superboss in FFV, and Omega Weapon was a superboss in FFVIII. Omega Weapon reappeared as a weak optional boss in FFX and a randomly encountered enemy in FFX-2. The Weapons which could be fought in FFVII were Diamond Weapon, Ultima Weapon, Emerald Weapon, and Ruby Weapon. There was a fifth Weapon, but it could not be fought, and is usually termed as either WEAPON or Sapphire Weapon anyway.Originally Posted by Sasquatch
As to the question of superbosses, the whole point, I feel, is to present the gamer with an additional challenge. If you've truly mastered the game, it gives one an opportunity to prove that fact. Granted, the FF series has yet to create a truly challenging superboss, but it still takes a thorough mastery of the game(s) to come out on top. This is the reason why one is often rewarded with some item or title of no actual use upon beating one (Omega Badge, Dragon Seal, Proof of Omega, Mark of Conquest...that sort of thing).
As to the final point, I would point out that WEAPON/the Weapons were much more important to the story of FFVII than the Dragons were to FFVI.