Since Tyranids are a npc faction and only exist to challenge players why not let the community have some input in they're creation. Tyranids aren't like the other races where specific characters,gods or themes can only happen within that specific army. They are creatures that all follow the exact same hive mind so a pink Hormagaunt within the Ultramar sector is not much different from a black Hormagaunt in the Gothic sector. So why not let the community in on the creation process that will affect all of us. Devs let me know how difficult this could be to implement.