Ok, here are some more potential chapter idea I thought up some more that came to my brain
-A Space Pirate/Privateer-Themed fleet-based Dark Angel successor chapter for the Escort request. Because why not?
-A either Iron Warrior or Iron Hand successor chapter that are just basically a Gears of War reference with Terrararaaa being chosen as their homeworld. Also, Combi-Bolters consisting of both a bolter and a chainsword combined into one rocks.
-A Iron Hand chapter that is a Borderland reference, with Wasteland being chosen as their homeworld.
-Either a Ultramarine or Iron Warrior chapter that is basically just a walking and talking TF2 (Team Fortress 2) references
-A Raven Guard successor chapter that are a expy of the Penguins from the Madagascar franchise, with the option of them being either fleet-based or Coloder as their homeworld
-Either a pure Word Bearer, a pure Ultramarine, or a Word Bearer chimeric with either the Ultramarine or Blood Angels, -I aren't picky- successor chapter for Creetaz. Because just like Ramz, I am worried that someone in the Imperium will end fucking up badly with it.
-A Iron Hand successor chapter for Dugronk that is a reference to Shrek. Mainly because I want one of the marines for this potential chapter to scream "WHAT ARE YOU DOING IN MY PLANET'S SWAMP?!" just to make my day.
-A Word Bearer/Blood Angel or Blood Angel/Night Lord chimeric chapter for Vladaadad because let's be real, this place worked for either one
-Either a White Scar/Iron Hand or a White Scar/Iron Warrior chimeric chapter for the Expeditions request.
And that's all the chapter ideas that I could think of.