Hey guys I have another theory that is pretty much impossible but I thought I should just throw this idea out there. I wonder if there is any chance that Katie Cassidy is returning as Earth-1 Laurel. The only reason I say this is because the producers confirmed Tom Cavanagh as HR for season 4 to avoid spoilers so I'm wondering if something similar is happening with Katie Cassidy.

Before you all hate on me I know that it probably isn't going to happen but just incase lol.