I've been thinking about a better approach to adding these "features" to the MediaElementPlayer. All of these additions seem like they would be good candidates for player "plugins". MediaElement comes with built-in support for extending the player by extending the `mejs.MediaElementPlayer.prototype` with functions that are `"build" + featureName`. See https://github.com/johndyer/mediaelement/blob/master/src/js/mep-feature-googleanalytics.js

Doing it that way, allows you to control the initialization via the `features` option.