1. Increase your dps from cobra shot as beast master by 100% or more by using a variety of weird items
2. Use Harpoon as survival to access forbidden areas.
3. Use explosive shot to aggro/kill mobs through walls (enormous gold farming potential).
4. Use "fetch" looting to bring players out of stealth.
5. Remain in camouflage while your pet attacks (marksmanship).
6. Use fel sludge from tanaan to increase pet dps by up to 65%. (The pet dies after 15 secs though)
7. Reset hunter cd's using proving grounds.
8. Exploit spec switching, killer cobra (survival) persists through a spec change.
9. Attack players through walls with stampede.