Recently DC released The Fourth World Omnibus vol 2. This 1336 page, backbreaking tome is the companion to the equally voluminous volume 1. That volume covered most of Kirby's work on the Fourth World mythos. This volume picks up with the continuation of the characters in concepts by other hands: Gerber's Mister Miracle, Conway's New Gods revival, the Great Darkness Saga in Legion of Super-Heroes, and Kirby's return with Super Powers, and a lot of other stuff. A lot of it is, well, not that great but some things (like the Great Darkness Saga and the Justice League two-parter on Apokolips) are, and others are at least interesting.
Here's the full contents: Mister Miracle #19-25; The New Gods #12-19; Adventure Comics #459-460; The Brave and the Bold #112, #128, and #138; DC Comics Presents #12; First Issue Special #13; Justice League of America #183-185; Legion of Super-Heroes #290-294; Legion of Super-Heroes Annual #3; Secret Society of Super-Villains #1-5; Super Powers #1-5; Super Powers (vol. 2) #1-6; Super Powers (vol. 3) #1-4; Super Powers Collection #13-23; Super-Team Family #15; and stories from DC Special Series #10 and Legion of Super-Heroes #287.
I'm not a thick omnibus reader myself, but I do like to see these handsome volumes sitting on my shelf while I read digital.