The “Enable JavaScript”, and the “Load images automatically” checkboxes were removed in the version v23.0, in late 2013.I think that the removal of these options was non-sense. Many people (me too) want these options back.
I would like a “View Page Source” button, because I think, that would be better just one click instead of two clicks (right-clicking context menu and then click view page source item).
It would be great if there would be a tab counter in Firefox View icon, and also an option to turn on/off this in settings. Like in FoxyTab extension: https://addons.mozilla.org/en-US/firefox/addon/foxytab