Imagine a campaign with a "common" system.
Imagine having settled themes in the first session (aka session 0).
Imagine having de-briefings used to leave impressions about what you played.
My impressions: a campaign is not a continuous play; weeks can run between a session and the next one. Themes could be partially forgotten, people could wish for a more relaxed play or a speed up one, they surely have different moods. However themes were decided: they can't be changed, and it's better to not change them.
What about micro-themes?
Why not pre-briefings:
They could lead to pre-narration...
In conclusion, i ask:
Can we organize those pre-briefings in a simple and functional way?
P.S: my impressions are based on true events I'm not going to elaborate. The reason lies in the simple fact they all lead to those conclusions and I think it's better to keep this post readable.