It would be cool we can go into a zone a kill the hallowjack rider depicted on the picture above for a chance at the bottom motif, the Dremora Motif that will be coming in the Witches Festival later this year
Seasonal world bosses seems like a neat idea and would add flavor into the game.
Aren't those riders just apex mounts from hollowjack crates? Correct me please, if I'm wrong.