Don't get me wrong. I love the fact that you can preview equipment and accessories before purchasing them or their recipes. However, Preview could be drastically improved in these two ways:
1. View
Preview only shows three views of our character: Side, front, and back. However, in gameplay, we see a 45 degree bird's eye view of our character. So why doesn't preview show us the view we see of our character in gameplay? Sometimes, a costume looks awesome on Preview, but looks mediocre or even terrible in gameplay because of the view difference. Another problem with the side/front/back views in Preview is that sometimes an accessory is visible in Preview, but not visible in gameplay. For example, a stranger hat with a pipe accessory looks great in Preview, but in gameplay, the pipe isn't even visible!
2. Lighting
In Preview, the lighting is a bit off. The colors in Preview may be lighter or darker in gameplay. Preview should have the same lighting as the gameplay in Spiral Knights. Also, auras are much more visible in Preview than in gameplay because of the lighting.
So, who here would like an improved Preview?
-Razwog
That, and a zoom feature. I'm game, but be warned, it's not something that most people (or even I) will care about much.