I realize all of your themes and most part of plugins have this block
// ADMIN MENU
function ais_menu($title = NULL) {
echo '<link href="' . osc_base_url() . 'oc-content/plugins/all_in_one/css/admin.css" rel="stylesheet" type="text/css" />';
echo '<link href="' . osc_base_url() . 'oc-content/plugins/all_in_one/css/bootstrap-switch.css" rel="stylesheet" type="text/css" />';
echo '<link href="' . osc_base_url() . 'oc-content/plugins/all_in_one/css/tipped.css" rel="stylesheet" type="text/css" />';
echo '<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" type="text/css" />';
echo '<script src="' . osc_base_url() . 'oc-content/plugins/all_in_one/js/admin.js"></script>';
echo '<script src="' . osc_base_url() . 'oc-content/plugins/all_in_one/js/tipped.js"></script>';
echo '<script src="' . osc_base_url() . 'oc-content/plugins/all_in_one/js/bootstrap-switch.js"></script>';
So if i have for example 15 plugins, the site will load 15 times this extensions, who can consume some extra time....
So each plugin should have a switch to tell if it's necessary to load the extensions, or in other hand automatically detect if the extensions are loaded or not...
This is only an idea....
Best Regards
João