[user104658]

To be fair, I say that DD will never make an appearance, but then I never thought they would cross over the DCTV stuff like they did. I was already shook that they had Brandon Routh and Tom Welling's "Supermen" in their Crisis On Infinite Earths storyline but I was properly stunned when Ezra Miller appeared and had a chat with Grant Gustin, so I'd be less surprised now if Marvel started merging old universes into the MCU. Obviously they're going to be using Multiverse to bring X-men into the wider MCU, I guess "various Spider-men" would be a nice gentle introduction.