Gatvol
Your description of a briefing is an interesting one! Just how long do you think it would take to brief it? If you are an airline Pilot, then you should have your research and study skills developed to a high enough level to self brief any item in the syllabus, so why do you expect a training Captain to do it for you.
Highlight the traps and give some helpful hints and suggestions perhaps, but break everything down to an ab-initio level is ridiculous unless that is the level of the trainee.
Spend some time talking to the experienced line crew we have when you are next flying and make use of their knowledge of the job. They don't need to be trainers to give good advise.
As proffessional Pilots we should allways be searching for ways to make ourselves better at this job, not leaving it until Sim day.