It is pretty cool looking, and the Korean K2 Black Panther.
I would like to suggest something as well (if that's okay): You always do "main" countries armament mecha musume, like the USA, China, Japan, Russia, etc.
Why not also Mecha Musume of third world country developments? The Serbian M-84 tank, for example, or the Egyptian Ramses II tank. And if you want to go "old school" there is the Argentinean D.L. 43 Nahuel tank. For airplanes you also have things, like the Brazilian Embraer EMB 312 Tucano, or the Polish PZL-130 Orlik. (Both ground attack planes), or the HAL Tejas from India (a multirole attack fighter jet)
Haha, well I'm trying with the most popular ones actually Of course I also have a plan to do the third world country armaments You know, something like T-50 Golden Eagle, HAL Tejas, and many more. But yeah, I should have enough time... OTL
Btw, sorry for the late reply You know about my online schedule already