The fact that these meta discussions predictably offer a wide array of solutions -- many of which are at odds with one another -- leads me to believe there isn't a solution. In fact, it seems like many of these discussions devolve into:
1. I have an idea!
2. Yeah, but that won't work because...
3. Oh, in that case we could just...
4. But, then...
The "quality" of HN and it's community is a function of many variables. It's hard, maybe impossible, to tweak the site and expect predictable results (and, there are always unintended consequences).It doesn't help that the feedback cycle is so long.
Let's have a hypothetical. Suppose, we decided the problem was that HN had become to design-centric. We want fewer designers and more programmers. So, let's make HN ugly. Really ugly. Then all the designers will leave and we'll be left with programmers. How long after making the site ugly will we have to wait to see the results? What if the designers retaliate by making a client-side css hack to make HN look even better? Do we end up with more or fewer designers? Did we do damage to the population of programmers who also happen to be designers? And, how do we account for outside influences? What if a prominent designer linked to HN the week of our changes and our tweak is overwhelmed by the flood of incoming designers?
I hope I'm wrong. I've been here 1467 (!) days, I'd like to stay a long while longer.