Of all the seasonal races that were introduced only one has not been added into normal year round availability. While the seasonal race concept was interesting when introduced as a new concept, there was nothing in game that really made sense for them not to be a playable race. Centaurs don't 'only surface to the stage from time to time' anymore, there are centaur based mini areas, centaurs sporadically spread across the world, and a Centaur based religion at this point.

My Santa request is that Centaurs become an available race to play year round, even if limited like azure/minotaurs, OOC time of year (spring) should not make a difference on the availability of race for the same reasons it didn't stick to goblins or frost giants.