The Waning of the Sixth Sun glossed over a good deal of 1.0's original story though - it only really concentrated on showcasing the '7th Umbral Era' events that were directly leading into ARR involving the formation of the Grand Companies and the summoning of Dalamud (not surprising - much of 1.0's original starting city story and the truncated 'Path of the Twelve' story was cannibalized for ideas and themes used in developing ARR's story, so SE probably did not want to create big spoilers to ARR's story in The Waning of the Sixth Sun).

Alas, unless you watch player recordings of those original story cutscenes and dialogue scenes from 1.0 they're now gone forever I'm afraid.