HUGE 40" by 15" retail poster of practically every Legion-related character, drawn by Keith Giffen and inked by Larry Mahlstedt.
It certainly seemed like a good idea at the time, but ultimately the task so burned the artist out that he left the book. Interestingly, there are no characters from the Legion's backup run in ACTION COMICS.
    Click on the image for higher res detail.
    A gatefold version of the poster, along with annotated identifications of the characters, was included in the trade paperback of the GREAT DARKNESS SAGA.