I didn't get that notion of "too perfect" from Ron Moore -- I couldn't have since I don't actually read that many interviews with Trek folks. My main interest is the shows themselves, and that's predominantly where I get my ideas about the show. So I got it the idea of "my, but there are a lot of pretty darn perfect people in Star Trek" from watching the shows themselves, so if you disagree, you're going to have to blame me, not Ron Moore.
And they are pretty darn perfect -- not absolutely perfect, of course, since that would be dull, but they are in perfect shape physically, they are emotionally stable -- and the proof of that is how much of a fuss is made when someone falls short of that ideal -- they play well with others, they are brave, they are clean, they perform their duties, etc., etc., etc. Sure, somebody slips up now and then, but not very dang often -- far less often than they would in real life.
And that's fine. If I wanted to see how a real military unit behaves, I'd join a real military unit.
However, I definitely should qualify that "perfect" opinion. It's not that the main characters have no flaws, and it's not that I don't find them human, but they were all cast in the heroic mold. Well, I mean, they had to be -- in real life, people are usually a mix of heroes and cowards, good guys and bad guys, but that doesn't make for very interesting drama. So in drama, people tend to be predominantly one or the other. It's a lot more clear-cut out there in TV World than it is here in Reality City.
And that's what makes Reg special. He, like the other main characters, was heroic when he had to be, but if you compare him to the other main characters, he was a lot more like...well, like some of us. They allowed him to be geeky, a thing which they didn't allow many regular characters. And that was really cool. After all, a person can be qualified and competent and brainy and still be geeky. I expect we all know people like that, and I also suspect that we all know a lot more people like that than like, say, Riker. And frankly, I like people like Reg more than I like people like Riker anyway.