Final Fantasy XIV 1.23b - Would you Play it if Available?

[Enkidoh]

the original mainstory or the 7th umbral story?

I've noticed a lot of players stating this as the only reason they would want to play 1.0 again, and it's a fair wish, however sadly, it's not really possible. SE stated already that the original storyline (that is, the original starting city stories and the Path of the Twelve arc) was virtually retconned for ARR and have been cannibalized for ideas and plotlines which appeared in ARR anyway, so pretty much all of 1.0's story prior to the Seventh Umbral Era story is no longer really relevant. There are exceptions though, where minor 1.0 plot lines have been referred to in ARR (such as F'lhaminn and Niellefresne's plotline from the original Ul'dah story being referenced later in ARR). But it's more a case of, '1.0 lore is not canon until we make it so in ARR.'

As far as Yoshi is concerned, ARR replaces 1.0 in every way, including story, making a revival of 1.0 'to see the backstory' as more like reading a draft script for a film which changed ideas during filming and then believing the draft was canon to the final version.