So we pulled the data once because it was going down constantly and having issues. Since we've allowed users to start uploading their own data, we have not since gotten anymore information from them. In fact we've started pulling away even more, creating custom categories, merging and splitting systems, changing up system images and descriptions etc. One of the goals is to also allow users to upload their data to the Database from within LaunchBox as well, making the process a lot more easier than using the web portal.
In terms of other media, we one day would love to include MovieDB, TVDB, AniDB, IMDB and all of those scrapers that Kodi can use so that users don't have to manually insert their data and we would make it easier to import that data as well. This is a goal that we have for the future though, we don't have immediate plans to do this unless something changes.
Also, feel free to ask as many questions as you would like. We don't mind answering them at all.