Have you considered Frostmourne or Shadowmourne (or approximations thereof) for the ISO Enter novelty? I guess something like that might have IP implications?
I like the novelties overall, but I have to say I prefer the R1/R2 Unholy rune skull design over the more abstract bottom row one. I wish the skull design were available on the bottom row too, at least for the 1u keys. Alternatively, what about a bat/gargoyle-looking thing for the bottom row icons, to match the original Unholy rune design? Here's an in-game
screenshot from the original WotLK client (peak wow amirite).
Will add R3 PgUp + R4 PgDn!
Love to hear it, ty!
Edit: I'd also love to see a Death 'n' Decay rose novelty somewhere. Pretty iconic.