There's also a bunch of songs where only part of the song was used and I want to see a level using the full song/another part of the song that I like more than the part(s) that have been used in levels.

Good example of this is Let Me Out of America, also by Cacola.

First two minutes of the song are great for a modern style level, and a few rated levels have capitalized on this. I do like that part of the song, but I like the rest of the song (which would not work well in modern, but would be good for some sort of experimental/weird level) more and would love to see that part in a rated level.