Selenium's locator strategy can be improved by using CSS instead of XPath for better readability and maintainability. This is because CSS selectors are faster, less brittle, and easier to read. The best approach is to know both XPATH and CSS well. Simple elements like input fields can be easily located with either method, but CSS is preferred when dealing with more complex structures like child nodes or subnodes. Using the correct notation for IDs and classes in both XPATH and CSS can also make locators shorter and cleaner. Understanding these locator strategies can improve Selenium tests and make them more efficient.