I don't recall if DOA1-4 screencaps were shown and chances are that DOA5 already branched off it's own continuity leading to 6. DOAD for the most part retconned 1-4 and it would be a disgrace if Team Ninja didn't add the scenes from the game into it just because the graphics are old since either way new graphics can replace it for good. Same for Ninja Gaiden unless if not added then Team Ninja seriously needs to reconsider putting screenshots, references, and scenes into future DOA games.