I know admins say they read the suggestions, but actually they don't, so...
Here's the thing, SK music does not have diversity. Let's see...We have "battle 1", "battle 2", "boss 1", "boss 2", "whitespace swarm" (I would like my microwave oven blasting out this music), "sanctuary", and some more.
We need to have fiend-like arena music, super techno-like arena music and WE NEED A LOT OF DIVERSITY WITH THE BOSS MUSIC. I know it sounds awesome, but seriously...
I don't own these music and art, but these music should seriously be implemented into SK:
Fiend Boss Music: http://www.youtube.com/watch?v=JLRJZ5r6Arw
What the fiend boss should be: http://wolfgirlamaya.deviantart.com/art/Morganite-Greaver-353581139
Fiend Arena Music: http://www.youtube.com/watch?v=LXxddaCpDZw
Roarmulous Twins Ironclaw Munitions Arena Music and other future techno arenas: http://www.youtube.com/watch?v=YUniuDIDUHM
Some sort of mysterious and ominous final boss music: http://www.youtube.com/watch?v=o1R6ksXGzgU
The Aurora Isles and Floating Island music remix (It's so beautiful! ;-;): http://www.youtube.com/watch?v=0u403LOPrBY
The Shadow Lair firestorm music should also be changed. Here is what the shadow lair arena firestorm should sound like: http://www.youtube.com/watch?v=BuhqeiRYAM8
If there is any adventurous admin willing to take this to the spiral knight developers, I will be very happy! :D I think that if you wonderful guys and programmers add diversity more in music, it will make the whole SK much more enjoyable! (Remember to ask the people that created the music for permission!)
Begging with allcaps doesn't get you any brownie points nor additional attention.