FWIW, I think if your interest is increasing the number of contributors than you would want to put a premium on contributions over kibitzers. My impression is that the community currently puts too much stock on random comments from people without a clear vested interest. This is more than likely to lead to one of two results: 1) People stop showing up for the discussion and simply go rogue and do whatever they like or 2) people simply leave the platform altogether. I'm pretty close to choosing the latter.
I have contributed over 90% of the US senate data at this point. The data had been left stale and inconsistent for years until I started contributing. The people with random comments and equally random commits now were making similar comments and commits during those years while nothing was being changed. I'm not saying this buys me carte blanche, but I am saying that it seems it would be in the best interest of the community to show a preference for people who put in the work as I did. Perhaps the assumption is that it wasn't work on my part but simply a mass data dump. That's simply not true. I spent many hours cross checking this information but more to the point, assuming a lack of effort is similarly discouraging for those putting in the work.
It's also worth asking why these conversations are driven to the relevant projects where people with a vested interest can convene rather than have everything discussed on an open forum where people feel free to offer drive by comments.
My guess is that you'll read this as bitterness and not how it is intended. If so than it seems to me to be an opportunity lost. I can always walk away. That's not the point. I haven't walked away because I'd prefer to have my work built upon. But if no one is stepping forward to put in actual labor then the comments come across as directives which seem out of place in a volunteer platform.
I may be wrong in my assessment and may not be around to see if I was or not, but I would imagine that proof of the pudding will be in the tasting. I.e. If you do NOT see contributors increasing this might be one place to look.