Ya, sadly those *story* dungeons became a speed run gimmick for quick tomes (not sure why people even still farm it). The best thing I can recommend is to set up FC runs like you said or put up a Party Finder for "Dungeon Runs & Gearing Up" and then you can tailor your message to find like minded people or others who need to gear up as well.

Keep it up though, there are those of us who are willing to help and not insta kick fresh 50's lol. Also, follow AreeyaJaidee's advice and report the offender if they are sincerely harassing you or others.