To whomever it may concern,
I'm unsure whether or not this has already been suggested, but here's 2 ideas I thought of (1 alone, 1 with a friend).

Accessory Suggestion:
There are many knights and NPC's found in the world of Spiral Knights. There are one or two knights in specific that have an accessory that no players can obtain, and this accessory is often looked at as "cool" or "bad-ass"... Yes, it's the eye patch! Would there be any chance of the designers at OOO to add an eye patch accessory for players in Spiral Knights? It'd be pretty cool!

Mission Suggestion:
As we all know - even though the Firestorm Citadel isn't as bad as the lair of the Roarmulus Twins, the level still gives plenty of hearts and health potions. Oftentimes, when I'm extremely careful and don't end up using all of mine, I end up wishing or saying to myself, "Why don't I have more hands?!" Maybe there's a chance of adding an inventory expander for missions inside spiral knights? Maybe a trinket such as a "fanny pack" which doubles the amount of carried mission goods? (6 health capsules, 6 remedies, 12 vials of your choice)

Thanks for reading!