ThunderAerol: I'm keen to the idea that there is no "Enlisted" person in star fleet.
That is a Rodenberry point of view, one that I do not subscribe to. He was a cop and borrowed the idea that everyone joins a police force as an Officer and everyone can move up the ranks of Sergeant, Lieutenant, Captain, and eventually to Chief, but it's equally possible for someone to stay a beat officer for their entire 20-25 year career. I much prefer the modern military version of officer/enlisted structure and an up-or-out policy.
Darkwing: E-3 and below ARE the bulk of the crew in real life, and part of that is the expense of higher-ranked crew. There are plenty of E-2 and E-1 as well.
Not at all sure where you get that idea. The raw data from the US Navy doesn't back that up.
When I joined the USAF (I was in Basic Training when Reagan was shot), my tech school was fairly short and I didn't take post-school Leave, so I arrived at my duty station as an E-1 but was promoted to E-2 about six weeks later. Today, Basic Training is longer, as are most tech schools, so most troops get to their first assignment as an E-2. Promotion to E-3 is, unless the rules have changed, only six months later. However, a fair percentage of people come into the service as an E-2 or even E-3, if they have Junior ROTC, college credits, sign up for six years, and/or are in selected jobs. Others (in the Navy) get promoted to E-3 or even E-4 right out of tech school if they do well enough in school.
Star Fleet can't rotate new troops to a ship as readily as the Navy can, so I'll stand by my position that there are no (or almost no) E-1 and relatively few E-2 because they get promoted pretty quickly. A ship right out of port will have more, of course, but not for long.
As to E-3 & below being the bulk of the crew, again I shall have to disagree with you. Here's the raw data (2013, I think) for overall Navy enlisted:
• Seaman Recruit (E-1) - 15,421 (5.1%)
• Seaman Apprentice (E-2) - 16,549 (5.5%)
• Seaman (E-3) - 51,001 (16.9%)
• Petty Officer Third Class (E-4) - 58,644 (19.4%)
• Petty Officer Second Class (E-5) - 2,552 (24.0%)
• Petty Officer First Class (E-6) - 54,019 (17.9%)
• Chief Petty Officer (E-7) - 23,359 (7.7%)
• Senior Chief Petty Officer (E-8) - 7,339 (2.4%)
• Master Chief Petty Officer (E-9) - 2,936 (0.9%)
Grand total: 301,820 enlisted (and 52,249 officers)
Assuming an average large ship has the same blend, one-third of the crew are PO3 / PO2, and less than one-fifth are E-3 / E-2. If anything, my list back in Post # 67 was a little heavy on the lower ranks. I had 20% E-3, 25% E-4, 22% E-5, 11% E-6, and 3% Chiefs.
All that said, going back to my post from which you quoted me, my comments were directed at the list in Post # 103 that had only three E-5 (Data System Techs) and three E-4 (Linguists), otherwise the entire enlisted crew were E-3 & below. No matter how you slice it, that was completely unrealistic.