I'll give you a few:
- Pet Battles!
- LFR!
- Heroic Scenarios!
- Challenge Modes!
- Legendary questline to your legendary cloak
- Timeless Isle - best thing ever, especially for alts. One toon can farm it and send 496 armor/ring/neck/trinket tokens to any of your alts. Those alts can visit the Isle, too, and pick up Burden of Eternity to upgrade them to 535 items (
http://www.mmo-champion.com/threads/...en-Chest-Guide)
- PvP with a 72% baseline resist makes entering PvP easier than ever
There is tons more to experience...just try it out.