What factors regulate how high or low melting points of different chemical elements are? Given that the pressure is ambient, what are other factors to consider when choosing an element with a desired melting point?

This wiki article on melting point seems to indicate that the symmetrical arrangement of atoms in a molecule is a factor. Another one, as I gather from that article, is how much free space atoms have around them to freely vibrate when being heated. Are these two, besides the pressure, the only know factors that define the melting point of a substance?