I don't understand what you mean by "The current system automatically reduces a player's family Karma score whenever they attack another flagged ... player."

Counter attack (or fighting back against initial flag) never get karma hit. 

Note that a character who has been attacked will not suffer any penalty even if they counterattack and kill the character who took the lead and initiated unsolicited combat. - https://www.naeu.playblackdesert.com/en-US/Wiki?wikiNo=53

I kind of broke the forum post!!!
Don't know how to fix it again.

Now this forum should be about "How to fix the forum when it's broken"

I have posted the topic on a new forum, because this one broke and i can't reppair it, nor delete this one.

New Post:

https://www.naeu.playblackdesert.com/en-US/Forum/ForumTopic/Detail?_topicNo=55856&_categoryNo=7&_searchType=0&_sortType=6&_orderType=False&_bigPageNo=1&_pageNo=1&_pageSize=25&_searchDay=0&_forumListType=0