My work is absolutely in progress. For now I'm finishing with consoles and handhelds. I have almost every platform configured up to the eight generation except for PSVita, Nintendo 3DS, PS2, PS3 and Xbox 360. The work keeps on!
Regarding computer games I have added so far MS-DOS, C64 (using the great C64 Dreams collection), Commodore Amiga, ZX Spectrum (based on the fantastic GB64 Spectrum software database) and ScummVM (thanks LB team for the now easy installation process!)
I have also configured Arcade (MAME) and Pinball (Visual Pinball X) games.
I use the auto-import option. It's not perfect but it's a great addition to LB. I really hope they continue improving it. Depending of the platform, once I have imported the games I have to check manually those not recognized automatically to see if there is a Launchbox database ID for the games. Sometimes this is a hard job, but I don't like to have games in Big Box without any media related to them. In this case, I'm now hiding those games not referenced with the LB database to have a clean collection.
My next steps are keep adding computer systems and create custom playlists based on personal preferences. An epic task from the beginning but so much fun in it!