Actually last year's tokens did not stay. If you had tickets from 2007 they stood around and you were able to exchange them for tokens. The first year they did brewfest you would get a lot more tickets and their was more stuff to buy including mounts. In fact if you purchased the handstamp in 2007 you can still buy both the slow and epic brewfest mounts. When they restructured brewfest in 2008 them made it so that you could earn enough tokens during the event to purchase what you needed. If they carried over to the following year it would be too easy.

Yay... one more day to get anywhere from 10-60 summons and see 10-60 times Corren getting looted and no mount dropping. Really wish they would do something like drop a piece of a Keg each time he dies, if you get 100 pieces, you can swap the keg in for a mount or something... Anything to make it more fair for the poor people like me that do this more than it should be allowed and get squat.
Trinkets are useless b.c I have better, the dagger and mace are nice for selling to vendors or on the AH, and who doesnt have the remote after 3 years?

Despite having some players being pantstains and fake-disconnecting when it was their turn to talk to Coren (yes, did ask around to see if they had been doing it with others) I was able to see a Brewfest ram and a Kodo drop - and luckily, won the roll on the Kodo. This was a couple of days after I'd completed my meta (still waiting on Sinister Calling and G.N.E.R.D. Rage for WALSTIB.

Here's hoping for the Horseman's Reins too - I really, really like that mount and would love to get it.