Beautiful. This, this is what us as a community need more of. The story and lore was there, it just takes a wonderful mind to expand and wonder upon it. -EDIT- Also my own personal theory. The traveller came to the Fallen, and noticed them as a race with potential for greatness, like us, however they grew mad with power, and instead of using it to prosper used it to cause violence, they argued internally and split into the houses, each one warring with the others, the traveller gave up on the Fallen and moved on. They are simply chasing their 'Ex-God' with vengeance or hope in their hearts.