Ye I don't like it either. It's useful for the 200 valor weekly quest. Celestial tournament was a good idea but i've now got all 4 pets and you need 3 tokens (3 weeks worth) to buy 1 flawless pet battle stone which is just ridiculous.... So there's barely any reason to do Celestial tournament anymore.
After a week when you've seen all the little events there's really nothing to do other than trying to find rares (either by camping or the pure luck of being within 100 yards of where they spawn for the 30 seconds they are up)...
Even when you find a rare mob, the pets they drop only have about a 2-3% drop chance to be there and when the rares have an hour long respawn timer that's a lot of camping...(I checked wowhead for drop chance of the pets from Bufo, Garnia and Jadefire spirit)
I assume it's similair for all the other bigger bag achievement items which makes it basically impossible to complete unless you are prepared to spend about 500 hours on that stupid island camping.