At least part of the world will became less important now.
// ==UserScript==
// @name It's Not Important
// @namespace lainscripts_it_is_not_important
// @version 0.5
// @description At least part of the world will became less important now.
// @author lainverse
// @match *://*/*
// @grant none
// ==/UserScript==
/* jshint -W097 */
'use strict';
var c = 0, imp = document.querySelectorAll('[style*="!important"]');
for (var i = 0; i < imp.length; i++) {
var si = imp[i].getAttribute('style'), so = si.replace(/((display|(margin|padding)(-top|-bottom)?):[^;!]*)!important/g,function(str,grp){return grp});
if (si != so) {
imp[i].setAttribute('style',so);
c++;
}
}
if (c) console.log('Now '+c.toString()+' element'+(c>1?'s':'')+' on the page '+(c>1?'are':'is')+' less important!');