I've avoided forking Mastodon for a long time because I don't want to deal with the insanity of maintaining a Ruby codebase.
However, I /may/ write a small external proxy, stand-alone and separate from Mastodon, to strip all the tracking shit from links people post here on NAS (Youtube ?si= parameter, amazon link parameters, corporate media tracking, etc).
Adding that to my list of summer projects (after my IRC project, and a few others) for when it gets too hot to comfortably work outside.