The story would still be boring and infantile, which is still the main issue with Dawntrail.
XIV's quest design has been bad for multiple past expansions. The only reason the topic has been hot lately is because the MSQ is so bad more players are paying attention to gameplay flaws that were always there.
XIV's engine isn't fit for elaborate minigames. Even Gold Saucer minigames feel "off" because of how the game has to tightly script everything OR have this sluggish delay to it (fall guys).