I agree with you that Barclay was far more entertaining to watch then Wesley. The only entertaining thing about Wesley was how much he annoyed captain Picard.

As for utopias, I've spent a lot of time thinking about them recently. I just finished taking a philosophy course on utopian and dystopian societies. The overall impression I got was that utopias are predicated on assumptions about human nature and they tend to marginalize or outright exclude anyone who doesn't fit in. This made for an interesting comparison with the dystopias.

I think Gene Roddenberry's argument is that we can develop a culture of excellence that overcomes the need for any sort of radical biological engineering to make people more agreeable. I don't know it's at all feasible but I find it interesting to imagine.