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In principle, Tamara is right. I already wrote in the chat that #3 is somewhat blurry.
#4 is rather gloomy, but symbolic – it essentially represents each race and the planet, symbolizing the world. However, space is a symbol of the unknown and doom, and this should be taken into account.
#2, in my opinion, is the most optimal. The bluish, non-irritating background makes the inscription stand out, and the well-drawn griffin is pleasing to the eye and also has a positive psychological effect on the visitor.
#1 is a good option, but the grand tree with the elven structures will distract the visitor's attention.
So, after considering all the options, #2 seemed to me to be the most suitable for the default skin.