I'm an avid Command and Conquer fan, and am watching something like 60-70 promising mods for C&C or related games! Besides being a fan, I am the head Particle Artist for Red Alert 3 Paradox, and I occasionally make concept art for kicks and giggles. If you want to reach me, just leave a comment or send a PM my way, and I'll be happy to respond.
Again, more concept art.
The Electrical Protectorate Shrapnel Bomber wields two huge "Fractal Cannons" that devastate enemy ground troops. As PsychoticLoner put it, this is "[an] ugly, blocky, ungainly machine, which is exactly what attributes I imagine [the] Protectorate having!"
Next up is the Atomic Kingdom of China's Peng Tractor-Bomber. For those of you who are not familiar with Paradox, the Peng has a large tractor beam on the bottom that picks up enemy tanks and compacts them into kinetic energy bombs (the cut-off description on the left) which are then used against the enemy. Obviously my sense of scale is way off (the tank being picked up is a Scorpion!), but the concept is solid.