At the moment I'm steering away from the idea of pre-population. My reason is that if I can streamline, streamline, streamline (as you rightly suggest) the process of adding a site it it hopefully won't be too much of a burden for the user. The very process might help venue submitters feel a greater sense of ownership over the site content which won't be full of the excess clutter of what I deem to be 1000 top spots in London. I don't want to be one person dictating the tone of the site to the users, only they, as a collective, should feel totally free to do that.
