> There are a bunch of existing extensions for Gmail UI tweaks, but most are just too heavy to me.
I went down the heavy customization path, and eventually came upon the profound realization that I was going the wrong way. I ditched all the extensions and went with the simple gmail[0]. No breaking changes to extensions over time. Less CPU load. Cuts out all distractions. Simple. Fast. I'm in and I'm out.
[0] https://mail.google.com/mail/mu/mp/