I've found Package Control to be pretty painless. I can go from "Huh, I need syntax support for this language" back to editing in a few seconds.
The other thing is that when I do want to customise something in ST, it will usually just involve editing a single obvious value in a JSON file, rather than hunting through docs to find out what keywords I needed to add to my vimrc.
The other thing is that when I do want to customise something in ST, it will usually just involve editing a single obvious value in a JSON file, rather than hunting through docs to find out what keywords I needed to add to my vimrc.