-=SHORT VERSION=-
Please turn the azure guardian set from
This
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Jorin in the Hall of Heroes, the knight who specializes in the standard issue Spiral Knights gear, states that his weapons and armor are good for about any situation in the clockworks. I agree with him on the weapons part. I disagree on the armor and helmet though. Cobalt -> Azure Guardian armor has a very obvious piercing specialization. Skolver armor, Mercurial mail, justifier jacket and Jelly mail are almost straight up superior versions, they have similar stats but also status protection and other bonuses. Besides elemental Azure Guardian also doesn't protect against shadow, but that's a special case I'll discuss further down.
So I propose that the cobalt line gets 50% reduction in piercing defense, but gets the same amount of Elemental defense on both pieces. The armor doesn't lose defense, it just spreads them out over a larger area. The piercing and normal defenses could also both give 1/3rd to elemental defense, but I'd leave those details to the devs.
This means that a starting knight who might make this armor in the missions gets a "jack of all trades..." armor set that can last him for a good long time but is also "...a master of none". It is a stepping stone like "normal damage" weapons, it will never be as good as having three separate armor sets with a specialized defense, so they're motivated to craft more armor sets over time with status resists and stronger one-type defense. I've seen dozens of knights stop their cobalt line in favor for the wolver line, since Skolver is straight up superior. With this change, these knights might make two full sets of armor in the long run instead of just one, OOO is missing out on energy being spent this way.
But what about shadow? The defense would be too thinly spread over all four damage types. Besides that, the Cobalt armor can already be made into Almiran crusader armor, which has shadow defense. This is fitting, in my opinion. Shadow creatures are designed as some of the fastest and hardest enemies to deal with; devilites, greavers, and (defeated) howlitzers are insanely fast. Three out of four danger missions and Firestorm Citadel feature shadow. Shadow defense is a reward from some of the harder dungeons (shadow lairs; almirian crusader, snarbolax) in the game or a good secondary craft project on the side (Skelly armor, Deadshot coat, etc) for when a knight wants to go do the harder content in the game.
Go with the first one, the other makes it to specialized based.
Maybe add half a bar to the element and pierce, too, considering Cobalt line is supposed to be a fairly generic defense rather than another pierce armor; or give it this instead of the extra half bars. Teamplay encouragement and what not.