Warning, Wall of text and some poor grammar (possibly) incoming...
While i love how the XLE ships look, they somehow give me the felling of a special private army due to their extremely snake like look and coloring, its nice that your focusing on a reptile like ships while representing those countries but there's 2 big flaws on them, being military ships they tend to "blend" into w/e they are meant to be, military tanks are usually yellow if their main battlefield is a desert while most is a forest like cammo, right now those ships are incredibly light green like a traffic light post, its like they painted to look cool instead of symbolizing their task, the Russians are a perfect example, they feel like military ships due to their dark color and the red is not as imposing.
The second problem but might be just me, is that, there are 2 type of Asian countries that would never blend the same way much like the Russians and EU or US, Japan and South Korea, both of them would have the most advance looking ships in any game with only Germany as a possible comparison, while Asia countries like China, North Korea, Mongolia, Taiwan, etc... have a very strong military connection with Russia's, Their ships should be more standard base while having that "Dragon" lookalike your trying to achieve.
Also i know you have been making sure every ship as a specialty, how about making the XLE ships a version of the Russians but be more maneuverable and less expensive (smaller hulls), possessing a the massive burst and high speed but having very weak hull, the so called hit and run or zerg in since the ships are cheap and well... China has the biggest army and economy in the world... not like losing ships and crew matter much..
About their looks, dark green with a brownish color would be great, also ur trying the make them look different so:
If you notice, the U like front resembles of a claw, the long back takes from reptiles like tail, by adding those scale like your using on the ships you made and a few outer scales with a razer look.
Take this as an opinion, i personally wished i could have the patience and perseverance to create ships dot by dot...