A tailored framework in my view is the same as a hypothesis driven framework / tree. In all cases you will need a create framework and have a hypothesis.
Frameworks need to be tailored, otherwise the interviewer may assume that you do not understand the question or how to focus on what is most important to the question at hand. All the interviewers will know the standard frameworks and know when you are using one. If other candidates use a tailored approach, then they will be seen as better than someone who doesn't use individual thought.
Early on in a case, when you create your framework, you are unlikely to have all of the facts or know the root cause. The framework lets you identify the root cause and gather the facts.
These are my thoughts