It annoys me that I need to make 4 clicks just bringing back the model type/speed popup to change model from Lite to Max and fast and thinking mode.

Why aren't there just two toggle switches, one that switches between Lite and Max and another below it that switches between Fats and Thinking. Like this

Lite <TOGGLE> Max
Fast <TOGGLE> Thinking

Put these two toggles right of the input field for the Lumo.

This way I can quickly switch Lumo model modes in a single or max 2 clicks. Instead of 4 just because I need to bring up the selection popup twice if I want to flip it from Max Thinking to Lite Fast.

You can put descriptions in a small question mark in a circle next to them just like you explain things in ProtonMail settings.