Would also be posible to buy more slots for stables, like merchant carts, or
people could buy temp slots to rent.
While the code to do that is simple, I worry that it might tend to clog up the
room. 10 mounts + 40 mount gear items = 50 items total. Personally, I'd avoid
putting many more then 50 items in the same pcity rooms, but I have seen a
room filled with massive vaults...
I'll let the 10 slots sink in and see if players really, really want more.