With the game being as great as it has for so long I'm sure someone's already suggested or made a mod for the ability to have pawns mount certain types of animals (horses,camels, even muffalos perhaps). I would love to see this in the base game to give colonists a way to move faster when they're drafted and mounted along with craftable armor for animals so they're not so fragile to gunfire. Maybe possibly adding ultra glitter world or imperial level armor to have animals get special traits to make things even more interesting. Perhaps the limiting factor of pawns who can ride mounts will be only those that have a high animal handling skill or share a bond with the animal. I do believe that adding this feature would make it that much more impactful when one of these mount animals died and conversely it'd be a fulfilling experience for the player to be able to ride their pawns into battle with guns/plasmaswords ablazin'.
The mod Giddy-up! (https://steamcommunity.com/sharedfiles/filedetails/?id=1216999901) has been around for a while. Try it out!