Here's a list (more-or-less complete) of all the units, buildings, etc that we have in the mod and that we have made any progress with. All percentages are completely arbitrary.
Achilles Fighter: 100% complete. Maybe it'll need balancing or something.
Mesofortress + Lampreys: 85% complete. Model, texture, weapon, particles are done; no voice yet, and the Lampreys need a code fix or two.
Claymore Drone: 65% complete. Still needs a secondary ability, has no unit responses, and... well, some people aren't satisfied with the particle effects so we may add something to it.
Swan Seaplane: 80% complete. No voices, it needs a just-built animation (so its wings don't go through the naval yard when it's created), and I'm not wholly satisfied with the aerial weapon.
Subhunter Frigate: 60% complete. No voices yet and its weapons are taken from the Naginata for now... but wow, the Naginata weapons fit well.
Alert Icebreaker: 60% complete. Needs new voices and its secondary will take a while to work in.
Barkhausen Microwave Tank: 70% complete. Voices are done and awesome, but the weapon effect isn't done properly and its secondary isn't finished.
Torchtank: 55% complete. No particles, no voice, no functioning turret, and the animations are broken, but it's useable. A minor setback or two that couldn't be predicted.
Particle Expeller: 80% complete. No balance or bug testing yet and amphibious animations still don't work - otherwise done.
Horizon Tank: 75% complete. New model (pictures eventually?) and we have a better understanding of animations now.
Pavlov Handler Tank: 90% complete. No voices and no icons, plus amphibiousness has bugs. That's it. The thing is practically done.
Aeronautics Complex: 95% complete. Lights, water platform and bounding box fixes are needed.
Experimental Workshop: 80% complete. Not fully functional in construction options and no particles yet.
Confederate Bulldog: 65% complete. Special ability mostly done, model and animations done and awesome, textures done.
Confederate Mastiff: 50% complete. Visually complete (new model and texture), functionally nowhere.
Confederate Dozer: Sketch thought of a GENIUS fix for the Generals-style building but I haven't managed to make it work quite yet.
Confederate Beagle: New model complete. Texture in progress.
Riot Agent: Our new animator Nix has fully animated her, and a texture has been started, but the first new infantry is on hold until Sketch figures out how teamcolour works on infantry.
We also have about a half-dozen units for which some progress has been made but not enough to really count at this point. Most of the units for the first release also have models, we're mostly just missing infantry.
We may also be rethinking a few of the army lists with relation to what can be done with the SDK, as well as what we want to include) cool ideas we had after they were posted and/or changing our minds about stuff). News on that as it comes.