Just played through my first game, and the stealth aircraft and naval units play amazingly! I also enjoy the presence of UAVs in the late game, great idea. I did notice the lighting on the missile destroyer was a tad bit bright as well, a minor issue.
In reference to the carrier issue, is it possible that the reason they appear weaker is because they are embarked? I think embarked units have reduced combat stats, I'm not 100% though.
On another note, I really appreciate the different models for the different cultural regions. One thing though... Russia is technically listed as a Northern European faction and therefore uses western models of the air cavalry, modern armor, and missile cruisers. Is there any way to change that so that they go back to using their civ 6 models, since they were already based off of Russian units (T80 MBT, Hind gunship, and the Soviet Tarantul Class Missile Corvette). My suggestion would be to maybe list Russia as an Eastern faction, so that they use those models. Or idk maybe edit Russia into a unique region?
I'm loving the diversity on the units though, and am excited to see what you'll do with the marine units you mentioned earlier. Keep up the great work!