Dragoons didn't have wyvern "pets" until 11(Most had no relation to wyverns at all, with the exception of the Highwind-Tycoon Family in 5, and Ricard in 2), and it took 11's team quite a while to balance it correctly! Remember when Call Wyvern was the 2 hour ability? and a beastmaster's jug pet could beat one?
Yea I love Dragoon, and the Wyvern added a nice story line to Dragoon AF, but what made a Dragoon a Dragoon was their combat style and armor. If the Dragoon in XIV is too obscure from their Lancer counterparts then maybe adding of the wyvern should be discussed.
Don't get me wrong I loved the Combination of Dragoon and Wyvern in XI, but at the same time I couldn't help but feel they only added it to make the class stand out from the other DD classes.