Allowing to omit closing tags is a bad idea. It doesn't add to clarity. In fact, it makes complex HTML much harder to read. And if you want to write your own si

Allowing to omit closing tags is a bad idea. It doesn't add to clarity. In fact, it makes complex HTML much harder to read. And if you want to write your own simple parser - good luck dealing with all those special cases. Where is the benefit? If you want minimalism, true minimalism, you should come up with a simpler model, rather than introducing a myriad of special cases to an already complicated model.