Is it possible and good to know and/or talk about other/more details about the way out of suffering than the Buddha did?

(One of the reasons for asking this question is that I thought that maybe some people needed some extra/other knowledge/insight in order for the Noble Eightfold Path to become more accessible to them.) Not necessarily to be "better" in knowledge and understanding than the Buddha overall, but to have a better understanding or additional explicit knowledge of some things or see certain things in more detail or accuracy with regards to certain aspects about the way out of suffering, and that may also address particular, "extreme" types of ignorance, mental illness, psychosis. To be able to answer other questions related to the way out of suffering that the Buddha was never asked.