I don't really get the "Yearly" Rewards.

[Velox]

Because it's a tradition.
First was horse kabuto
then sheep kabuto
now monkey kabuto

...get over it?

Actually first was the rabbit kabuto from Heavensturn in 2011
then there was the dragon kabuto from 2012
then there was supposed to be the snake kabuto for 2013, but the servers went dead before it happend, so SE gave them to us when the 2014 Heavensturn started.