According to a book written by
Jane F. Gardner on
Roman myths, the name Remus comes from an old Latin root, which means "
slow".
She argues that Remus never existed and was probably introduced into the story of the foundation of Rome at the time when plebeians seized some of the power (between 367 and 296 B.C.). Remus thus represented the
late accession of plebeians to power (still according to Gardner).
Now if we take this into account, there is an Italian saying which is "
Chi va piano, va sano": who goes slowly, goes safely. Rome might thus have been more democratic and republican, less imperial, and might therefore have survived longer, but in a less powerful form.
That is...if you have a lot of imagination!