How about instead of horses, we think along different lines? For example, in the Underdark, Drow ride giant lizards and spiders that walk on any surface with the rider strapped into the saddle. An underground environment, in my opinion, is not suitable for horses (which is an above-ground, needs-wide-open-spaces-to-run creature). We\'re not trying to fool or convince players that they\'re not underground. A new species of mounts could even be designed, unique to PS. There could even be several different species of trained mounts at varying costs, so as to be affordable to most everyone. The more expensive the mount, the better it is. Can also be used to display character status. Thoughts?