The false name on Lois' LuthorCorp nametag, Sadie Blodgett, is a false name used by Lois Lane in the comics series, Superman's Girlfriend.
The director of Warrior Angel is played by David Richmond-Peck. He also played the meter maid assaulted by Lex in "Dichotic" and Jonathan Kent's former campaign manager, Sosnick, in "Fanatic".
Wonder Woman's logo can be seen on different items used on the set of Warrior Angel, like the loudspeaker and the hat of the production assistant. It is most likely used as Warrior Angel's logo.
Among the items found in Ben Meyer's hideout are - Hawkman, Hourman, Sandman, Starman, Mr Freeze, Green Lantern, and Black Canary action figures - "Stone" #1 from Image Comics - and various other items not focused on.
The final line of the note sent to Clark by Ben Meyers is "Save the World." The "S" in "Save" looks strikingly similar to the iconic Superman logo.