You've never read the "Great Darkness Saga" in LEGION 287-294, by Levitz/Giffen?

Or the X-MEN/TITANS crossover by Claremont/Simonson/Austin?





Even if you don't like Kirby, those are some great stories with the same characters, by non-Kirby hands.
From the last 10 years or so, one of my favorite continuations of Kirby fourth world characters is by Jose Ladronn, in
LEGENDS OF THE DC UNIVERSE 22 and 23.
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And I'm sure there's a few other expansions that I'm not aware of.