I've only been using Emacs for 7 or 8 years, but in my admittedly limited experience, Protesilaos has singlehandedly done more to bring more people into the community than anyone. He's been a huge advocate for composability in packages, through use of the core Emacs functions, allowing incredible flexibility without being locked into a particular library (e.g. Helm / Ivy).<p>I'm always curious to see what he's been up to!