I'll just throw my own guess: it won't work. Airstrikes and SSG raids didn't work before, and it won't work again, except to absolutely convince everyone in South Waziristan that Islamabad is their enemy, not their government.

I don't care if you kill Beitullah Mehsud with one of these strikes, as I expect we will one of these days. The TTP will not overrun Pakistan, but it is successfully creating its own zone where the Pakistani government by its own admittance cannot go. As long as this occurs, the Swat Valley op will have to be done again and again and again. The TTP must be challenged comprehensively in its own territory by adequately resourced government troops unafraid of close combat.