Extbase MVC Framework

It would be nice to have at last basic mixins support in Extbase.
Using mixins it would be possible to add php "snippet" to extisting class.

1. Conflicts (between mixins, or between mixin and original class) will not be resolved and will result in error.

2. Mixin code will be added to the end of the original class file, and a file with new version of this class will be stored.

3. Object Manager has to include file with mixin instead of original file.

4. One class can have multiple mixins attached.

5. The configuration might look like this:

config.tx_extbase {
    objects {
        Tx_Extbase_Domain_Model_FrontendUser {
            className = Tx_Extension1_Domain_Model_User
            mixins {
                tx_genderExtension {
                    className = Tx_genderExtension_Domain_Mixin_User
                }
                tx_dateOfBirthExtension {
                    className = Tx_dateOfBirthExtension_Domain_Mixin_User
                }
            }
        }
        Tx_Extension1_Domain_Model_User {
            mixins {
                tx_companyExtension {
                    className = Tx_companyExtension_Domain_Mixin_User
                }
            }
        }
        Tx_Extension2_Domain_Model_User {
            mixins {
                tx_petExtension {
                    className = Tx_petExtension_Domain_Mixin_User
                }
            }
        }
    }
}

6. Under discussion is how to handle inheritance of mixed classes and overriding mixed classes with DI.