I know what most of modders thought at one point: "Damn, 2 dimensional sprites are boring, I wish I could use 3-D visuals for normal items too". I have a request and an idea tı change that.
If someone could allow Minecraft to read .kvx or .vox formatted files, user-made texture packs would become more alive, making blocks that don't have a perfect square shape (such as brewing stand or cauldron) would become easier and we could make very cool-looking projectiles. If you are interested in this project, you can check http://advsys.net/ken/download.htm for the Slab6 voxel editing program. Here are some seperate examples converted from Doom :