This is a sensitivity of mine that many might not relate to, but the extra visual noise in toolbar buttons (bottom) versus Sequoia (top) will actually make it very difficult for me to focus on the content of my work.

WilliApple posted a way to disable liquid glass completely on Tahoe in his quick video here. This isn't just the slider or reduced transparency, but fully disables it by running the commands here: https://pastebin.com/raw/Cb7X37G6

But as you can see in the video and the comments, there are side effects that might be a step too far for most.

Does anyone know if this works differently on 27? I really would need to get rid of the bubbles/circles around all the toolbar icons on Finder, and preferably the rest of the system.

Upgrading to 27 would mean getting two more years out of my M1 which is on Sequoia currently. I can't believe bubble wrap in the toolbars is what's going to take me out.

Edit: I've come across a potentially better command that targets a specific application, in this example, Finder:

defaults write com.apple.finder com.apple.SwiftUI.DisableSolarium -bool YES
killall finder

I don't recommend anyone run these commands for me specifically since we don't know the outcome. But if you already have and can confirm that this works for macOS 27 it would be a massive help.