Wow! What a coincidence! I literally have something extremely similar which I called `$e`. I think one crucial thing you did not mention is that this conforms to the signature of jsxFactory, meaning if you run some kind of transpiler that supports jsx, you can literally do:
parent.append(<p>Hello</p>);
(Mine has slightly more functionalities, such as allowing passing in styles as a object, auto concatenate array of strings for class names, etc.)
