Soo.. Here is some of my ideas and ideas that i get from people and it would be cool to see in game .

Event ideas :

Japanese/Korean Event :
Starting with Haven . Haven would have japanese cutural dragons everywhere , the tree in the middle of the fountain would be a sakura a giant tree that has pink petals and the Haven's gate would be a giant red gate with lanterns .
New npc in the Haven , a red dragon that sell you items from the event and explains more from the event . New Box , costumes armors/helms and accessories and a new boss ! But to get to the boss , you need to pass through gremlins with red dragon costume ( or without the red dragon costume ) If you kill the boss , it's going to show you the path for the boxes that drops the tokens for the items in the event .

Attacks from boss:
The Samurai will throw his lance in the sky and it's going to drop in a certain local .
He will dash into you , causing damage and stun like Vanaduke .
He will spawn 4 fire puppys that going to shoot fire at you .
And a big slash that deals normal damage and has a chance to cause fire status .

New Missions :

The normal missions from the history of Spiral Knights .

Aura ideas :

Obelisk/Rock Aura .
( Description )

This is a trail aura , and it has 4 little pointy rocks spinning around you and little rocks around you . It trail leaves rocks in the ground .

Swarm/Ant Aura .
( Description )

This is a trail aura , little ants starts to fall of you and it swarms your legs that leaves a ant trail .

Lego Aura .
( Description )

This is a trail aura , it's like a twinkle aura but with legos ! That aura makes little legos fall of you and leaves little pieces of legos behind . Becareful with people around you , they can step on it !

Accessory ideas :

Lego Crown - It's made out of legos bricks !

Dark Plasma Wings - It's like the plasma wings but with a different color .

Item ideas :

Samurai sword - It has a powerful cut and can dash into enemies like War Hammer
( It deals normal damage )

Samurai lance - This was one of the favorite weapon from shoguns and guards in japan . That lance can slash once and do 2 powerful pokes at the enemies that deals a monstrous wound .
( It deals normal damage )

Lego Sword - This sword was a legendary old sword . A legendary warrior had that sword in your hands , this weapon doesn't cut well but when you bash into enemies it drop legos on the ground that do damage and has a great and powerful bash and has a mystic power on it !
( It deals normal damage and has a change to stun when you charge the sword ) .

So that was all my ideas ( and friends of me ) and i would be happy and hype to see some ideas in the game ^^.
Sorry if i typed something wrong because i am Brazilian so my english is not the greatest , hope you guys understand what i typed *laughs* .