I feel bored this week and wanted to play the one spec I have not had too much experience with to be more comfortable with it in the event that we either decide on using it in a tournament setting or if it gets enough improvements next patch to be a strong contender for a PvP spec to get power leveling. I will try to outline the pros and cons of frost:

There are a lot of drawbacks to frost right now. To simplify it even more, the biggest problem that I see with it is that you are almost forced to sub-spec Blood with frost if you want to do any sort of decent damage and have at least some better survivability about wow power leveling, so skipping Unholy means you lose out on many "necessary" PvP talents such as +6 secs on diseases, -10secs off death grip cd, controlled pet, -20% stun/fear duration, no disease dispel resistance, etc. Essentially the CC gained by frost (hungering cold) can often be seen as being made up for by unholy specs with the ghoul stun. In addition, with the rise in the amount of shaman teams out there, not having a ghoul to totem stomp is a huge setback as they can almost freely remove your diseases and ground your spells all game long about wow power leveling.

This was pretty much inevitable once hunters became stupidly overpowered being the best CC class, best DPS class with MS, and best survivability class all at the same time in a single patch to get power leveling. No explanation is really needed for this about power leveling. It is obviously a hard comp to oom with divine plea, water shield, and mana tide, and it has enormous cc at the same time with hoj, repentance, wyvern, freeze, and hex. Then you throw in the shaman ability to interrupt casting and tremor fears and you can see how easymode they make it for the hunter to tunnel a target all game with LNL procs and well timed TNT stuns.

Feel free to make predictions on any sleeper comps you feel have potential to win the tournament realm