What do you think if the Hunt Boards were to be expanded and performed similar to the Field Manuel from FFXI? Players could simply choose from a list of Marks to hunt. The conditions would not have to change but perhaps the length of respawn rates could be reduced so to be repeated multiple times. This I can see players forming parties, collecting the same Marks and hunting for them, no triggered items. At least I think this would seperate players from going after the same ones.

FFXICLOPEDIA:
http://wiki.ffxiclopedia.org/wiki/Field_Manual