Barret
Ruined. Aeris died and that gave Cloud and company a stronger passion to destroy and rid the planet of the evil that was Jenova, Sephiroth, and the clones injected with Jenova Cells. Aeris summoned the White Materia since she was the last remaining Ancient, and thus no one could take her place. If anyone else would ahve died it would have been a sad moment, yes, but since it was Aeris, she was the lone person who could make the summon and prevent Meteor from engulfing the world.
If she was revived, would Cloud have had such a strong grudge against Sephiroth? Probably not then.
EDIT: Gone 'til next Saturday. Cya Everyone.