Board Thread:The Flash discussions/@comment-5536445-20191211020522/@comment-1783334-20200101091122

Okay, I just realized something. By making Star City 2046 an alternate earth rather than an alternate future, it gives Stephen Amell an opportunity to return for future crossovers. It would also mean the ending of season 7 holds and that Earth-1 Oliver cannot return to the land of the living.