Glad you like it!
Hopefully Alien's advice will do the trick :)
Here are two concepts I've come up with:
Would you be interested in working on one of them with me?
Awesome, yeah voxel are a great artistic medium; they can be massively useful for rapid prototyping and are highly stylistic.
Yeah I've worked on a few games. I was an artist on Critical Annihilation (Steam), created Lonely Forest (mobile) and am currently working on Lil' Chomp. I also made an isometric asset pack with 1000+ sprites.
It depends which one you use. Voxel models can potentially end up having high poly counts since every voxel face is equal to 2 polygons, however they're great since they be automatically deconstructed cube by cube with the right engine and coding. As for the lighting, it varies depending on what you're trying to achieve but at the base level there shouldn't be any major problems with it.
Here's a great article that explains voxel art in greater detail:
I tend to use Adobe Flash, Hexels, MagicaVoxel and Qubicle.
The vector art and pixel art that I do is in PNG and JPEG format, whereas the 3D voxel art is in Vox, QB and OBJ format. There are various voxel plugins for Unity that can work directly with Vox and QB files :)