It feels like the mod has a strong back and a weak front. Complex mechanics, progressions, and so on, but visually just repainted enemies. Have you considered enhancing the mod's visuals? I'm not writing to say, "Go do it," but perhaps to offer help, or at least sponsorship

Unfortunately, I don't have any artistic skills.
All I can do is combine and recolor existing images using Factorio.
Furthermore, the images seem to significantly increase the mod's size.
And finally, I have no idea what each of the Biter factions would look like

Perhaps if someone made a separate mod with a reskin of the rampant biters, that would be ideal.
Similar to the Bob Angel reskin mod

Regarding sponsorship, thank you for the offer. But there are many nuances.
Firstly, many methods simply won't work in Russia.
Secondly, the original mod's author (Veden) may claim that this violates the license.
Example: https://mods.factorio.com/mod/RampantFixed/discussion/6254d1a7e3e23bc4fcc944ba
Thirdly, the authors of the images may subsequently revoke permission, and I will have to urgently return the images to their original state

So, at the moment, it will bring more trouble than benefit. Theoretically, this is possible in the future

1. No problem, I'm from Russia too, so we can surely do smth with it
2. I can handle finding an artist to draw assets for the mod. Your permission and willingness to collaborate are the most important things
3. Generally, the license doesn't regulate tips, it only prohibits commercial use and profit-making. I don't consider this a violation, as this is my initiative, not your request or similiar

In principle, there is permission and desire
I propose you to create a separate topic in Russian language, where we will discuss the options, which pictures should be added. This will reduce the impact of double Google translation on the result