[themacguffinman]

DOM performance has already improved leaps and bounds after millions of dollars of engineering and countless hours of effort. Same with Javascript. At some point you have to accept that the DOM has fundamental design flaws, its specification and requirements are the problem yet cannot be radically changed because of backward compatibility concerns. Browsers have spent decades optimizing everything possible, one should start by acknowledging that before tiredly trotting out magical performance improvements as the answer.