Most people don't like the look of trolls, I for one think they walk and talk awesome. Also, well yeah the Troll's racials don't fit for a Mage very well. Undead is the best choice for a mage racials-wise.
Trolls are cool, but they are more fit to be Hunters, not Mages, but still they look awesome and if that's good enough for you, then ***** Undead and explore the world on your jamaican troll mon!