List od potential improvements:

• Start using https://github.com/FriendsOfBehat/SymfonyExtension , which should make managing Context classes easier
• Register Page/Element Factories as services to make them replacable
• Replace EnvironmentConstDictiornary with Symfony parameters
• Register Pages/Elements as services to make declaring new Pages/Elements easier (without the need to add code to Factory) - requires splitting creating and setting parameters
• Get rid of UtilityContext (BrowserContext), as it is not a Mink Context that defines steps
• introduce NullNodeElement to avoid dealing with nulls (cannot be done if we want to use WebAssert)