After Kerensky's hint I tried to "explore" the message staggering.
And it is amazing!
I only saw the feature between scenarios.
I did not noticed this Feature in scenarios because I played campaigns without it (or I did not noticed it). Yesterday I saw it the first time in a scenario.
It is better than the XML-tag messages at PC. It allows dialogues.
I will remove the 1st entry of my wish list.
And thats the result (sorry for my english..):