Well, a c-box would be nice for everyone to chat with one another instead of going through PM but if you think it can wait, then it can wait. (:
Events along the lines of natural disasters such as a prolonged rainstorm, hurricane, tornado, etc which could force some leads to have to share lands and the like. It'd make for some interesting plots/conflicts and such.
If it was alright, we could temporarily do something with other animals i.e. wolves, mountain lions, etc as well.
For whatever disaster that occurs, we could have the Admin or Moderators put all the horses names into a random generator and the first couple could be potentially injured? Role-player would be able to pick the severity of the injury and it can be as small or as big as they would like it to be but that's just a suggestion and it would cause more realism. Once the next disaster comes along and say if Role player A's horse got chosen again, they'd be excluded from just one disaster and another role players horse would be chosen.
*shrugs* Just some thoughts.