Many thanks for your efforts

I'll try it but I think it will be displayed above the slider, which is placed in content-top. But it has to be underneath the slider only on top of content area so it doesn't push the sidebar down.
The lot of numbers of template files that have to be changed for adding additional content-top I saw because some of them I found, for example php.ini and variables.php. And a simple done mistake is then hard to find.
So I'll try your probposal, otherwise I work with just one info/news-message with load-position and the others I'll put in content-bottom.
Due to my problem of a second slogan line I think I found an alternative in your forum. I think I can put the slogan completely into a modul and with that I replace the social icons like in this thread:
http://www.joomla51.com/forum/support/commercial-templates/need-to-convert-template-param-to-module-position#1593 Do you think that is the best solution?
Thought I can put a html-break into the slogan in template configuration but it unfortunately it doesn't work. It then shows the break tag in the slogan line.