Why not just request a DF option for hunts based on regions? The maps can be a generic arena with the general layout of the map region they represent and the transition between fights can be a QTE to boost the dynamic of the instance, like: Kill x Mark and a heard of <random mount> stampede/fly over through the battle area and carry you to the next mark, giving you some bonus/boost for the next fight if the QTE is successful.
Each region having 5-6 marks on both As and S ranks. With the A rank regions being on a daily reset and the S ranks a weekly reset. This at least gives those who don't have the opportunity to join linkshells and have the available time slot in their day/week to join the train, to have a passive but consistent shot at getting any of the rewards they want.
