I was actually thinking about the name "capstone roulette" yesterday, and I'm glad someone else had the same idea! It makes a lot more sense than expecting "Adventurer Dungeons" and "Warrior of Light Dungeons" to be meaningful distinctions, since all player characters are always both adventurers and warriors of light. I would much rather see "Story Dungeons" and "Capstone Dungeons." (The crowning points of the story are capstone, though, so maybe keeping the "Leveling" name is fine, or finding a better word for "not capstone.") I hope you realize that words have meaning, and "the game does not already use that term for something else" is a good thing.