Big numbers that DPS can generate is always more entertaining than tanking for many players. I have tanked in several games and I love tanking and plan to do it here on my Warrior when I hit 50 and then probably my Paladin. I find Warrior more fun, but I really like the look of Paladin gear and swords. I will probably have both maxed before too long. As far as a mount, maybe it can be less a mount and more like clas specific Barding for the Warrior and Paladin respectively. I love the chocobo, and ride it more often then not.