I'm a lisp machine romantic, but only for the software side. The hardware was neat, but nowadays I just want a more stable, graphically capable emacs that extends down through and out across more of userspace.

> emacs that extends down through and out across more of userspace

Making something like that has turned into a lifetime project for me. Implemented a freestanding lisp on top of Linux's stable system call interface. It's gotten to the point it has delimited continuations.