The bit about enabling org capture from "outside" Emacs is really interesting. It's been so important for me to have a system that enables me to make notes, todos etc. with extremely low friction. At any time, without my hands leaving the keyboard, I can take a note that is either directly attached to what I'm currently working on, arbitrarily file it somewhere if I know where it should go, or just let it go into the general inbox (the other part of the system is actually getting to those things in the inbox at some point). Up until this point I have had to be "in" Emacs, though, which accounts for most of my time, but not all.