This is just me, but I've liked most of the episodes this season. Look, the problem with all shows is that they get old. Plus, with a show like this, there really isn't all that much they can do to shake things up. So, having said that, I do like the fact that this show — unlike the momma-ship, NCIS — the people on it are at least admitting that they might be getting old, or tired of it, or would like to do something else. It's natural. Jethro Gibbs IS NOT natural.
But yes, please do something with Hetty. I've been watching the reruns on whatever channel it's on, so I've gone through the seasons in relatively quick order. Based on what I've seen, I'm surprised the name of the show isn't "Where's Hetty?" because that's asked starting in Season 2 (TWO) and running through today. She comes and goes, but god forbid anyone should know where she is. Then with what she said to Callen about Anna last night, I honestly can't come up with a good reason he still likes/respects her. (I know, I know, spare me the reasons.) He asked a question. Answer him!!!!
I did find it odd that Deeks was so hard on himself about the "kid" sitting in the car. How many times have they jumped into the front seat WITHOUT checking for a bomb?
I can see this show transitioning into something where we might see Callen helming an episode with a team of newbies, then Sam, then maybe Deeks and Kensi. Then maybe we'll get one or two episode a year where they're all in it.
To answer someone's question above, I think Hetty was burning her file and passports.