Feature request: Sublime Text should honor the Mac OS system-wide proxy settings. In a corporate environment, these settings may be auto-configured with a PAC file for a HTTP proxy. Package Control, Sublime’s own update utility, etc should all use the system configured proxy settings on the Mac.
Hard coding the settings in the Settings file is not desirable, as the proxy settings may change based on the network.
Also, it is not desirable to hard-code proxy authentication details (username/password). A second feature request might be to store these in the keychain if they are needed to authenticate to a proxy.