Over the years, many toy lines have featured impressively large play sets. He-Man had Castle Eternia, Castle Greyskull and Snake Mountain; Transformers had Fortress Maximus; Thundercats had the Cat’s Lair; and G.I. Joe had too many to go into. Recently, toys have really cut down on the amount of large play sets that they offer. Is it possible for modern toy lines to bring these back, or are kids no longer interested in the big sets?