Since it is their final season, and a short one, they can aim for the fences.
To be honest, that's as good as time as any.
This is getting nuttier by the second.
A Freaky Friday thing going on here.
CW's Elseworlds event hearkens back to Donner's original Superman.
The Man of Steel will be firmly planet in the Arrowverse now.
So, they aren't simply using her to get a 'Bat' character in there.