Out of curiosity, what happened to the SpeedForce keeping Barry young? And by extension, Iris? These split continuities are confuzzling, I feel like I'm reading separate era flash books spliced together. It's a tight balance between keeping Flash fresh but not a reread of the silver age blow by blow.
Funny thing, tho. The tornado twins were never that powerful. In fact they were far less powerful than Barry. Why so many artists on this book? For a top tier character it's kinda strange. Good callout to the black flash, as theories went that Barry has both aspects of the speedforce. We saw evidence of this during the other Rebirth series. Thawne just wants Barry all to himself!