You bring up another interesting point for me. How do you even know when the problem is or isn't solved? There are two common themes I see in forums like this (and of course, many others of varying nuance). One group has been around for a long time and says it's just not like the old days, and a second group says that it is, and that the former are looking at the past through rose tinted glasses.

I can't objectively say that slashdot was better or worse here. Firstly, because I didn't go to slashdot nearly as often as I do here, and secondly, because I haven't done anything to thoroughly define and measure what I would consider a quality community.

If my problem is that the community is bad, I think I need a way to show to myself that it really is. I need a set of guidelines which I want my community to interact according to, or standards for the goodness I'm trying to push, and a way to see how much goodness there is, then a plan to drive that goodness.

And I'm not even saying that you need to be rigorous about it. Maybe that would help, but I think you can get some ideas with some general notions like tiny surveys, or something like that. I guess you could start getting more interesting and use sentiment analysis after auto-classifying posts, looking for meta content talking about the board.

As another aside, I think more specialized, smaller fragmented communities tend to be better for me, which is why I also enjoy subreddits like r/types and such, but again, I think that by no objective standard