"cool" was just an example to explain....
Actual Wayfindercall is
[[Wayfinder? &startId=`0` &rowTpl=`myRowTpl` &activeParentRowTpl=`activeParentmyRowTpl` &hereTpl=`myHereTpl` &hereClass=`[[+wf.alias]] selected` &outerClass=`left` &level=`2` &where=`[{"class_key:!=": "Article"}]` &excludeDocs=`391,392,393,394,395,396,397,398,399`]]
myRowTpl
<li[[+wf.id]] class="[[+wf.alias]]"><a href="/[[+wf.link]]" title="[[+wf.title]]" [[+wf.attributes]]>[[+wf.linktext]]</a>[[+wf.wrapper]]</li>
activeParentmyRowTpl
<li[[+wf.id]][[+wf.classes]]><a href="[[+wf.link]]" title="[[+wf.title]]" [[+wf.attributes]]>[[+wf.linktext]]</a>[[+wf.wrapper]]</li>
myhereTpl
<li[[+wf.id]][[+wf.classes]]><a href="[[+wf.link]]" class="linkweiss" title="[[+wf.title]]" [[+wf.attributes]]>[[+wf.linktext]] </a>[[+wf.wrapper]]</li>
I think there is much potential to optimize, but i am very happy actually that this is working.
Yesterday i had no clue to solve this... now, i have something usable. (far from perfect)
I will go on with thinking

and mod the rest today...
Thank you so much for inspiring and help.
with best regards,
chris