I wrote a little neovim plugin to track :command and mapping usage - I found I'd have a "good idea" for a plugin, write it (or download it) and forget about it, but it'd still be there in my vim config and maybe impacting startup time.So I had another "good idea" and wrote a plugin to summarise usage of plugin scripts, the idea being that I can find ones I rarely use, and drop them.
If you're interested and use neovim, there's install instructions in the README