Trading is what made CSGO Skins so popular. It allowed players to exchange their virtual items for new ones when they got bored with their look or everytime Valve released a Case with new set of skins. It helped to grow the community and game itself.
Many people feel that VGO trading sites can do the same for these new blockchain based virtual items. It will be harder though since in order to be desired, they need to have a game where they can be shown. So far there has been just one producer (creator of the Forge Arena) who decided to implement them in his video game. Hopefully it will kickstart the whole industry of VGO trading and popularize VGO Skins among gamers.