Supreme Commander Two-Thousand Thirteen - Version 1.2 OUT NOW! A 'scale and gameplay modification' that changes more than just unit sizes. Basic units have been shrunk in size but now produce much faster. Projectiles shoot farther, and both units and projectiles move at more realistic speeds, so terrain and army composistion are more closely linked. View distances are also augmented. Keep it mind this is only a mod, do not expect it to be completely bug free or balanced. A full list of changes can be found in the 'Features' section.
A quick pic from a Beta 4 playtest. The official version is pending release any day now!