Yeah, in truth I see no reason to ever get rid of TGDB or Wikipedia, but if we go that route they may not be enabled by default. Regardless, there's not much reason to completely remove their support from the application. So I certainly wouldn't worry about losing any of that functionality.
Per the moderation issues, I have some *really* cool ideas towards solving that problem, that have not been done before. I'm almost hoping that this one wins the vote, because the more I think about it, the cooler the idea gets. Allowing everyone to click a button and have their entire collection added to the public database could mean we have the most extensive database in the world. The system could then recommend entries based on which ones are most populated, and chosen the most often, while giving you complete control to choose whatever you want. This would be a challenge, but I believe we could well solve any moderation issues, as I have very extensive experience with these types of development issues.
But the possibilities go well beyond sharing metadata and images. I'm envisioning a broader social platform where people can share their collections by posting web browsable versions of them online, community ratings, and much more. Still not sure if we'll head in that direction, but it is exciting for me currently.
As always, any and all thoughts are welcome.