Well, you are a 3/4-good party on the universal good-ometer.
Also, I try to run the NPCs as I would my PC character. That is, those that want to survive will try to hang on even if it is not the most "optimized" thing to do in an encounter. So when they get in single digits they are going to either surrender or play dead or whatever is appropriate to their skill set. The religious zealots that MUST be killed or they will gnaw and curse and fight, come later.
That and I wanted to give you more healing options, but not yet, i.e. you probably should rest before entering the temple proper, hence the spent belt.
Since I have the time to do so, I'm trying to give a depth of personality to these guys, even unnamed NPCs. Verdin is my creation, as it seemed odd to have this independent group of guards and sentries with no one coordinating them just hanging out outside the temple. There are also details to the various factions in and around the temple that I am enhancing to try to bring depth to the story. You skipped the other group's story so I enhanced this group's.
Lastly, I always found it annoying that with the leadership feat you would like to be able to attract followers and cohorts from within the cast of characters, but normally the friendly NPCs are teh suck. His borderline indifference means that with the right coaxing he could be a cohort to one of you if you pushed the right buttons, and his effectiveness as a combatant means that he wouldn't be an onerous piece-of-baggage-useless-hanger-on type.