As far as I can tell, the mounts are for vanity purposes only. Would be nice to see them have a speed bonus, ride them into battle, or even just

creating an event like jousting or something to make them more useful to gameplay, inspiring people to want to upgrade to the next level of steed.

Gambler's love the horse tracks, might think about adding some sort of horse racing betting system? Bet you get a lot of people spending time on

that portion of the game if you do decide to implement the idea. Up to you really.