What I wish was different
I enjoyed my internship for the most part. The biggest thing I wish I could change was how busy and uncoordinated making policy is. The DoD, DoS, Commerce, Transportation, Energy, NSC, the White House, etc were all involved so sometimes it was hard to coordinate things or you'd complete a significant assignment and be unsure how it impacted policy in the long run.
At the same time, right now is a difficult time for State. The DoD and the white house have gradually taken more control of foreign policy, and State isn't hiring.