I made 4 fan classes and aspects once as a thought exercise in the time-honoured tradition of Shits and Giggles. The classes were meh, but the aspects ended up quite fun to think about -- I was mostly thinking of them from the perspective of aspects-as-parts-of-the-narrative, which made it a fun challenge to think of aspects of the story that could get their own. well. aspects!

The first pair was Fluff v.s. Flame, or Filler (secondarily peace/calm, comfort, domesticity, and dullness/padding) v.s. Action (secondarily danger, risk, thrill, and vulnerability). Generally meant to reflect the stakes and the balance between downtime and intensity. In hindsight, this one was stepping on Breath/Blood's toes wayyyy too much -- I even considered naming Flame "Thorns" instead which would've made it so obvious lmao. They're overall Breath + a bit of Void and Blood + a bit of Light.

Fluff's colour scheme was almost white with pink hues, Flame's was reddish-orange, like a darker Light. Powers are pretty obvious, I think, and pretty fun to think about in the case of Fluff. Knight of Fluff who protects their team by smacking imps into being peaceful and calm, Witch of Fluff who turns all of the Black King's attacks into puffs of feathers.

The second pair was Gum v.s. Ink, Entertainment (secondarily novelty, childishness, artificiality, and the future) v.s. Seriousness (secondarily tradition, authority, society, and the past). These were more about the tone of the story -- meant kind of as a compliment to the Hope/Rage axis -- between cartoons and comedies for Gum and documentaries and historical-political dramas for Ink. To be honest... these are also borrowing from Breath and Blood, but not so exclusively as Fluff and Flame at least! Gum is essentially Breath + Time + maybe a bit of Rage, while Ink is Blood + Doom + maybe a bit of Life.

Gum's colour scheme was garish pink and green and Ink's was muted medium-dark grey with no particular hue. I also considered "Clay" or "Stone" for Ink, but I felt Ink fit the best in the end -- though I think stone/petrification related powers for Ink players would still be interesting! Gum powers I thought of as essentially following cartoon logic or being able to bend and stretch things/yourself... so essentially Rage's fuck the plot powers with a cartoonish twist.

I thiiiink I made symbols for them but I don't know where they are... I might dig for them but it's highly possible they've been lost to the digital void u~u

Now, do I use any of these to conceptualize any of my characters today? Nah. I considered them for a bit when I was planning out a fanventure that never happened but I eventually abandoned them in that project since they weren't really adding anything. But it was a fun creative exercise! Fan classpects are neat :D