[logback-dev] Why is ability to create custom logger context blocked ?

Hello, We wanted to create our own specialized context selector, which would allow to switch to our own specialized logger factory (logger context). However for all methods in ContextSelector interface have return type is LoggerContext and not ILoggerFactory. All getLogger(..) methods in LoggerContext are final. It appears that creating specialized custom logger factories is blocked by design. What is the reason for this block, that I'm failing to see ? Any enlightenment on the matter would be greatly appreciated. Thanks a lot in advance for any help.