thanks for your responses
@photoman355 :
The intention why I choose TinyMCE is pretty simple, the user knows tiny from the backend, so he might feel comfortable to tiny.
I didn't faced any problems with integration so far, just finished the jquery thingy to add the needed divs, a's etc...
Just tried to keep it on a very simple and basic approach, just click on the $page->body content and change the text on the fly, not more. For further editing you still have to go to the backend.
Further editing just feels wrong on the frontend.