>>86588220The entire season was clearly ripped from the "Future Flash" arc of the New 52 comic. Try reading it.
It's pretty obvious they ended up changing it up because having Barry fight Barry as the big finale wouldn't have been all that crazy. If they just follow the same arc all the way through, it would be boring as well. At a certain point, they decided to shift the main focus to Earth 2 because that's a much more interesting way to take the show, and recognized they'd need to use Jay Garrick as soon as possible. Eventually the scrapped the idea of Future/Earth-2 Barry, and then they came up with the twists with the new Zoom and all that.
