A show that often throws references to comic book history, Legends of Tomorrow isnt shocking anyone by honoring Jurgens in such a way, but an indirect-but-still-obvious reference to Booster Gold like this almost definitely means that the character himself wont be introduced anytime soon.
This is a direct reference to comic icon Dan Jurgens, the writer and artist who created Booster Gold for the same-named comic series published from 1986-1988.
Or maybe the producers are honoring Jurgens for creating Doomsday and killing Superman, rather than for his work on Booster Gold.
Legends of Tomorrow airs Thursday nights on The CW.