It is possible if we would have a pictures of The Nertherlands national suits
This is the best picture I can find. It is quite an old suit (around 2010).
Also one question: in the Youtube video you show at 7:42 a career mode with the four different leagues of 42 athletes. In this version there are a lot of new athletes like Alina Stremous, Magdalena Gwizdon and Amanda Lightfoot. I don't understand Russian, so I don't know what you say in the video, but is it possible to get that all these athletes in the game?
These biathletes are created athletes in our athletes editor. So you can add athletes by yourself using standart skins or you can download save files that our some subscribers makes. These save files already contains a lot of created athletes and could be downloaded from this topic (see the last posts): https://vk.com/topic-169234559_40758895?post=3248