@tyil @jrballesteros05 I think if anyone is going to seriously try to write a new web browser from scrarch, it would have to be in phases, gradually working toward standards compliance. I think projects like Qt and Gtk have what it takes to construct a new web engine, it is just a matter of defining widgets that can be constructed from HTML tags and updated with CSS.
Also WebAssembly is gaining momentom now, JavaScript will likely go the way of COBOL in 20 years. At that point, all you will need is the DOM, executable code will all be WebAssembly, compiled from other languages.