In my workflow I've integrated both ranger file manager and fzf as file pickers: fzf when I'm inside a git repo ('git ls-files | fzf' - but doesn't have to be this way), and ranger for elsewhere. Both ranger and fzf are amenable to being used for this purpose, so all it takes is a couple of lines of hand-rolled vimscript - no need to wait for a third party integration plugin to drop.