@furioussnail I’m glad you like the plugin! Whenever you have a chance, it would be great if you can spare a minute and leave a quick review about it here: https://wordpress.org/support/plugin/wp-asset-clean-up/reviews/#new-post

As for GZIP & Brotli support, there were no plans to add this as so far the plugin’s configuration did not touch at all the .htaccess file. Perhaps, this will change as there are more and more users who request features that would involve updates there.

Check out this article that has some examples of implementation: https://wp-rocket.me/blog/brotli-vs-gzip-compression/