In the spirit of this, Lyra's Neuron explorer: https://github.com/lyramakesmusic/neuron-explorer is an incredibly ambitious and cool piece of software. They are blowing up on X because they figured out the exact neurons to steer to make Qwen3.5 4B "evil", and can broadly do this across property types: https://x.com/_lyraaaa_/status/2113833330429083662