I have had this idea for a long time now but as I thought that it wasn't the greatest then I didn't submit it. Well, now its here.Deviation Preview
Well, the idea is very simple and I think you all have seen the working version of it somewhere. You have a greater chance to see it if you are a designer.
Basic idea would be a rollover. If you hover over a deviation thumbnail then the thumbnail will go bigger. You can see the working version here [link]
It would save a lot of time because right now, if you want to see the larger image, then you just have to click the thumbnail and go to the deviation itself. But preview would be great because you don't have to go to the actual deviation and you can use it when your just visiting someones gallery and just want to see the actual image a bit bigger.
Thats my idea about deviation preview.