Yak Track really helps feeding my skilling addiction, not gonna lie.
Besides that, the rewards are
meh
except the Forinthry Royal Knight Greatsword (which looks like a cool Zweihander) and a couple of other wep overrides. Pets are ugly, in my opinion.
Leveling +110 all skills and completing stuff here and there
I don't really like Yak Tracks or Season Pass kind of content, but I like the rewards.
The good thing is they added the Skilling and Killing option. It is like getting rewards for doing nothing I don't plan to do. It is a seriously good deal.