The problem is that this show and Flash was made after DC decided they wanted to creat their own universe and couldn't figure out how to tie it in the way Marvel has with Agents of Shield and the now defunct Agent Carter. Even their Netflix Episodes have a tie in to the movies in some way.
DC waited too long to get their foot in that door and by then, you already had abominations like Flash and Arrow and even Supergirl and likely, Legends of Tomorrow was already green lit before Batman vs Superman came out.
Also, there is no way a good Flash or Arrow show should be on the **** network like CW.
The last 2 seasons were painful, was this thing renewed? The writing staff and show runners should all be fired and banned from making anything ever again.
If WB still has the rights to this stuff, cancel all the shows and tell the fans they are not going to let these shows taint the water with what they are trying to do with the new movies and since the new movies will take some time to come out, they will create shows with Netflix that will help launch each franchise in DC with a tv show/mini series that will explain some of the back story and origins and also fill in gaps.
Nah...WB/DC might not be that smart.