Last night I got my Hunter to level 90 finally, and I also got to spend a nice amount of time on the Timeless Isle.
Now is the time to get there and get things done. Rare spawns are shared, and there are tons of people out there killing stuff. I killed a couple of the world bosses out there and also a giant freaking shark as well as a pirate ship.
There are a lot of decently fun things to do, and new stuff to see. I plan on playing some more when I get home.
Also, it was practically raining epics. I think I got like 7 of them on the first day and my newly dinged hunter is in more than half epic gear.