From a PR standpoint they sort of screwed this up by not explaining how everything was going to look when all is said and done. So you end up getting told one part of the policy that is going to ruffle feathers without getting the whole (hopefully good) scoop. One thing that I don't buy is the "this will help our sailors have an easier time explaining their jobs" when many rates are far easier to understand ("I'm an XY technician") than some numerical code. Also, MOSes in other branches still have a name associated with them...so I wouldn't be shocked if sailors were still allowed to say "I'm an aviation ordnanceman" when all is said and done, even though you wouldn't use that when addressing them or talking about their rank.
I was never a fan of calling sailors by their rate, mainly because if I didn't know the sailor I didn't know what their title was, and I'm not in the business of shipmating people. I thought it would have made sense for sailors to wear a collar device with their rate like warrants do, but I guess that's never happening.
Yeah, I agree that they screwed it up. I'm on a ship now, and I spent this afternoon talking to Sailors in all different rates, who all feel like something they earned has been taken away from them, and I couldn't explain why. I don't know, and from the information I have, I don't agree. That doesn't mean it's a bad thing, but I found out about the change when I was reading message traffic. I've got no way to explain to anyone how putting "B440" on a resume tells civilians what you did in the Navy. I also don't see why they're using cross training as a selling point. I've seen what happens when a rate that specializes in one thing gets folded into a related rate. Expertise disappears, and serious problems can come up. Are we talking about sending people through schools to give them different, but related, NOSs? What happens to their careers if they stick with one NOS and get good at it? What happens to the Navy if advancement depends on getting multiple NOSs and bouncing around between them? If you have to spend years to become a technical expert in your NOS, but you won't advance if you do that, where does continuity and expertise come from?
Also, I'd be shocked if the AOs stopped calling themselves AOs. All that IYAOYAS stuff isn't going anywhere.