OK, I'm going to complain for a second. I got the NDSEG, so it's a little hard for me to complain about anything; I got HM just now, which by itself I'm not so bothered about, but my comments are a little disturbing (if I had more legitimate comments and still got HM, I wouldn't feel so bad).
I got an E/G, E/VG, and E/G; my broader impacts comments essentially consisted of them asking why I didn't mention how I would involve K-12 activities (which I don't believe was required in the Broader Impacts), in addition to saying I could consider all the broader impact criterions to further strengthen my application. Though they mentioned how I gave the broader impacts of my undergraduate career (Tau Beta Pi, an engineering workshop for K-12 students, the impact of my research on society...).
I'm really just not quite sure how the comments on my Broader Impacts are relevant? It seems like they acknowledged how I talked about the broader impacts of my previous work and my planned work, but I didn't address every single broader impacts topic possible (which I doubt any NSF applicant did or should?).
Again, I'm not trying to complain that I got HM (though it certainly would have been nice to do better), it just seems like all my reviewer comments on the broader impacts section are almost not relevant or important.