I did like the twist in the end. I really disliked the POI in this episode but the underlying storyline of HR was more important. And as much as anyone hates that the crew is getting bigger. Lets face the reality before it was only Reese and Finch. And Finch hates guns and violence. In fact Finch has never fired a gun.
So it was only natural that they would need more muscle. They needed Fusco, Carter and now add in Shaw and Root. Lets face it, when you go to war you need soldiers and allies. The 2 man group of Reese and Finch wasn't going to cut it.