Just a brief suggestion.
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SKINs should be issued to celebrate major events, dedicated to major empires and corporations. Portraying unique art, decals, empire, corporation and maybe even personal logos.
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Paints should become available as hangar services along with cleaning. Just plain single color of your choice. Imagine coloring whole fleet for a roam! Red versus Blue or some such. ISK fee 1-10-50 mil for every recolor. Luxury colors, optional wax or matte finish, glitter and pearl. Or scratches and burns.