Other than crashing that $85M asset with seemingly little or no repercussion, I liked that episode. Well, McGee's manhood issues aside, that is...
It is almost like they don't know what to do with McGee now that Tony is gone. Perhaps the writers got so used to him being a second banana to Tony and Ziva, and a third banana to Gibbs, they don't know what to do with him now that he's the senior field agent. In post-Tony seasons past, they've written McGee to be a fully competent agent growing into the SFA position. But it seems this season they've elevated Bishop's competency profile and demoted McGee back to being comic relief.
The McGee of the past would not have been nervous about this procedure at all. Past-McGee would have done all his research, learned everything he had to learn, pulled in case studies, and would have gone in fully informed with all confidence. Past-McGee would never have originally suggested that Delilah endure major surgery in order that his delicate male ego and manhood could stay intact.
That said, if Tony were still around, this situation would have been mined thoroughly for laughs, but the butt of the joke would be Tony having issues with the thought of the procedure and McGee being all mature about it. But that would have been completely in character for both characters, and a whole lot more palatable than what was presented in this episode.
At least the twins were mentioned. (I could also have gone the rest of my life without knowing that Vance is super potent. Blech....)
Back to the A-plot. I think that pilot will get drummed out of the Navy, for destroying that F-18. But then, because of her dedication to getting justice done and doggedly prodding along the NCIS investigation, Gibbs is going to invoke "Rule 5" and hire her to join his team.