How can we improve WHMCS?

Think you guys left out an important feature here! Without being able to set data attributes we are not able to set additional information on menu items and sidebars. For example, we can't simply set data-toggle="modal" data-target="#id" and take advantage of bootstrap! Also you guys hacked in this feature with tabs using the getAttribute method and if we have a option to do something like ->setData() or ->getData() this would resolve that issue and you could remove that very specific code in six/includes/sidebar.tpl