Board Thread:Suggestions forum/@comment-29021580-20180403230142/@comment-29577004-20180405141310

Though who would realistically spent that much time doing this solely for horses? And again, you could always just make specifically hired units' mounts not be mountable.. More just wild NPCs.

For example, if you're roaming the plains of Rohan and you come across a horse who had its rider slain by an Uruk, you should be able to get on it. Though if you came across a wandering horse in Mordor by a failed Gondor attack on a server, that horse wouldn't be ridable as it was hired by an NPC.