What if, somehow, a non-pauline variant of Christianity somehow ended up dominant? What if a "Christianity" that placed less of an emphasis on Jesus' death than the religion that we have today was the surviving branch of the Jesus movement? Early Christianity was not a unified movement, except in so far as the various groups all acknowledged Jesus as a major figure. It is clear that various groups viewed Jesus, and his theological role, differently. If the movement that survives is less focused on his death as the "point" of the faith than Pauline doctrine is, the Cross might not be as popular a symbol. I could be misunderstanding the early history though, and I don't know the divergence needed to prevent what became Christian orthodoxy from being the dominant "Christian" theology.