Well then you have to extend the argument to plugins as well, and certain plugins (SnipMate, AutoComplPop, Fugitive, etc.) can increase productivity by several orders of magnitude.

It's best to store your .vimrc + .vim/ folder on GitHub or a thumb-drive for easy restoration rather than crippling yourself with a limited configuration. Someone else mentioned Homesick (https://github.com/technicalpickles/homesick) which works really well.