Ok... not the crappy horse of graal. But a horse that you must feed, in order for it to survive, and train for it to increase in speed. when rping comes out you could buy/craft armor for the horse and ride into a battle bad ass style
Then, there would be commands for the horse like if you whistle it comes to you (Not like the bomy where it comes out of nowhere, there should be places to store your horses)
ok thats my idea o.o