Welcome to the Suggestions forum and to Spiral Knights.

First, I might want to warn you: don't ask admins to look at anything within a thread. They will anyway, and some people get really fussy about people who ask for admins to read something.

Now, in the future, you'll want to put a space between each paragraph, so it's easier to read. For example, put a space between one suggested item and another, to let people know, "Hey, I'm talking about something different now." Otherwise it ends up looking like a big wall of text.

You can also make text bold or italic, or post links, with html tags like these:

Remove the tildas (~ is a tilda) to use these!
<~strong>Bold Text!<~/strong> becomes Bold Text!
<~em>Italic Text?<~/em> becomes Italic Text?
<~a href="http://wiki.spiralknights.com/Electron_Vortex">Electron Vortex is the best weapon ever becomes Electron Vortex is the best weapon ever

So anywaaaay, on to your suggestions.

Origami Samurai Armor

A very original concept- I can't say this has been tried by anyone else.

Now, what would paper armor defend against? Not piercing damage. Spikes and fangs just poke through paper. In fact, I'd say it wouldn't have much in the way of defense in the first place- like, some normal, and some elemental, but less than the equivalent Spiral Demo and certainly lower than the Grey Feather armor's defenses. It also seems like it might be flammable, meaning it'd have a negative defense against Fire.

However, if it's getting crappy defense, we need to give it something good to make it worth using over some other set. So what are Samurai good with? Swords, duh. There were no guns in medieval Japan, and whoever heard of a Samurai bomber? However, Sword Damage is already taken by the Skolver and Snarbolax armor sets, and Sword Attack Speed is taken by the Vog Cub armor set. That leaves Charge Time Reduction, which is useful on a lot of swords, but we're gonna need more than that to justify any Fire weakness on this thing.

So let's try something else. What helps someone with charging up swords besides, of course, Charge Time Reduction? The most we can reasonably put that at is Medium, because with a level 10 Sword's innate Charge Time Reduction: Medium, you could get Max with just Medium on each piece. However, we could also stick Sword Damage: Low on all levels of the armor, and Movement Speed Increase: Low on the 5* set.

(2* Origami Helm -> 3* Mighty Origami Helm -> 4* Sensei Origami Helm -> 5* Shogun Origami Helm)
(2* Origami Mail -> 3* Mighty Origami Mail -> 4* Sensei Origami Mail -> 5* Shogun Origami Mail)

We'd give these relatively low Normal and Elemental Defense, and Fire weakness. (I really can't see paper giving resistance to any status effects.) In exchange for the terrible defenses, though, Origami Armor users get a Sword Damage Increase: Low and Sword Charge Time Reduction: Low on each piece of the 2*-4* sets. At 5*, it would increase to Sword Damage: Low, Sword Charge Time Reduction: Medium, and Movement Speed Increase: Low on each piece. This lets swordsmen fire off crazy powerful charge attacks one after the other while running around like lunatics. But they have to be careful or they die quick, especially in Fire levels.

Since you didn't really specify any attributes for the Origami Armor, I came up with some, but you'll have to come up with how the other weapons work.

Paper-Cutter

First, you really shouldn't have a two-star weapon made with a four-star material, and even five-star weapons aren't made with 50 of anything. Otherwise the costs are OK.

Anyway, on to the mechanics. The Paper-Cutter is a Sword that shoots a projectile. The Spur line already does this, though; you might want to come up with something different for it to do. Remember, you don't want it to be so bad that nobody would use it- but at the same time, you don't want it to be so good that everyone would use it. Strike a balance.

You'll also need to specify the amount of hits in the basic swing combo, as well as what the Charge Attack does. And yeah, Normal damage makes the most sense here. I assume the Paper-Slicer and its 4* and 5* variants will function mostly the same way as the Paper-Cutter will; might I suggest the names Paper-Shredder and Origamasamune for these variants?

Pinwheel

It sounds like it'd be better to make this a gun; while it's technically NOT a gun, it's mainly a ranged weapon. (I assumed it would look like, you know, a pinwheel; we already have a sword that shoots projectiles in the game.)

If so, how many shurikens does it fire with the regular "clip"? Does it fire all its Shurikens in one shot, or does it take a few clicks? Or maybe a bunch of clicks? And how about the Charge Attack? Does that fire more shurikens? More powerful Shurikens? There's a lot to think about involving this one.

As far as alchemy goes, it should probably get its own line instead of branching from the Paper-Cutter if it's a gun. I'd suggest 2* Pinwheel -> 3* Pointed Pinwheel -> 4* Particularly Pristine Pinwheel -> 5* Ponderously Perfect Pinwheel as the names of each.

Crane

And the Crane seems more like it should be a bomb to me. The Crane explodes. And we really don't need a sword that shoots bombs on the basic attack. Think about balance! Also, homing is a bit too easy; no Sword, Gun, or Bomb currently in the game homes in on the enemy, and for good reason. However, a bomb that moves could work.

Bombs are easy. Just say what the bomb does when you lay it down after charging it. For the Crane, I'd say an explosion slightly smaller than the Blast Bomb or Nitronome of the same level, with a little less damage- but the Crane moves a few spaces after it's laid down, in the direction the user's facing when it's laid down. But that's just my idea.

Again, I'd recommend another alchemy path; I'd suggest the names 2* Flying Crane -> 3* Whooping Crane -> 4* Mighty Crane -> 5* Grus Explosiva. (Grus is the genus cranes are classified in.)

Recolors and hidden drops

As far as hidden drops go, Origami Armor and Weapons should be no more likely to be found in a treasure chest than any other item. And not everyone will be using the Origami Armor or Weapons; if they get recolors, other weapons and armor should get recolors. (I'd personally love to have a blue Electron Vortex.)

Overall, it's got a great concept. The mechanics of the weapons could use some improvement, but then almost everyone's first suggestion could at least use improvement. (Heck, I suggested they add banner ads in-game to increase revenue, which I now recognize as a terrible idea.)