I’m thinking the time might have come to write a wrapper around #php DOMDocument which actually makes it usable. Thoughts:

• automatic conversion of various encodings to HTML entities to scoot round encoding issues
• XPath queries still work but querySelector and querySelectorAll are implemented for both the document and individual elements via Symfony XPath → CSS converter and relative XPath queries
• A DOMNodeList which actually implements ArrayAccess instead of acting like a fake array
• Perhaps some javascript-inspired property names like innerText, innerHTML for consistency
• Maybe some jQuery-influenced shortcut goodness for doing things like removing/replacing elements