Your intentions are good, just be careful you don't tread on the toes of the Cabin Crew hierarchy who spend their working life teaching the cabin crew what to do in emergencies.
So very true.
My CC briefing...
Follow the cabin supervisors instructions to the letter and we will have no problems whatsoever.
Works like a charm.
If the cabin supervisor reports to me that one (or more) of the CC are misbehaving, they are offloaded, pronto.
Did this with the whole CC one time, as these were European girls with a (very able) north African female supervisor.
The result?
Termination for three, suspension for the rest.
From what I found out later, they were trying to railroad the CC supervisor, and I will absolutely have
none of this type of nonsense...
ever.