This is a great post with many things I hadn't thought of
An extremely important step any Drupal developer can take to
the footer and make sure CSS is in the head. Web Basics from 1999 that
are often overlooked in today's high speed web.
Other important steps include using a CDN, and correctly saving
images (or avoiding PNG all together for content editors who
don't know how to save PNG files for the web).
Slides from my recent performance talk: https:
More information about text formats