I disable all sorts of features on Wikipedia (and MediaWiki sites in general; why can't it support a cookie to automatically change these settings, so that you (the end user) can copy your preferences between MediaWiki instances merely by copying a cookie?), and would want to disable some others as well, such as the custom widgets and most animations. I do want some of the features that use JavaScript, but not all of them. The browser should have a better way for the user to adjust individual scripts.