I might sort them with headphone first and genre later, as people seem to seek which gear is being used, and genre listened to right after.
Managing DSP chain presets can be a tricky thing, as by default the only way to trade them between different foobar installs is to copy the Core.cfg file. And truth be told, it's not exactly the most practical way to do it. Although, there is a component that's meant to handle import/export of DSP chain presets.
You can get the component here: http://www.hydrogenaudio.org/forums/index.php?showtopic=86873
Do note that some users might need to press shift+right click for the context menu to display the proper options.