Alright, I've started the Underworld expansion suggestion's support banner. I'm using the Biome Banner (from the wiki) as a background, but there's a few things I wanted to include:
1. Your avatar(so people know who made the idea)
2. Your new Arch Demon sprite (as an example of what's included in the idea)
3. The Muckery (same as #2)
Do you mind? Don't worry about me plagiarizing, you'll get the credit you deserve.
Trying to, anyways. Rytmik Ultimate is a lot less flexible than I initially realized.
Also, whoa, whoever changed the name of the suggestion for me so fast is awesome!