Translation feature is very nice. I would like to suggest that Kagi allows users to translate without having to click the translate button and allow reverse translation to be done automatically when the users click the switch language sign in the middle. I use Google Translate everyday despite the lower quality translation than DeepL because of the seamless experience when translating a few sentences. The reverse translation when switching back and forth also helps with spell check and word suggestions when writing something in a language you are not familiar with.
If it's not possible, then in the meantime, I would like to suggest a dedicated button for reverse language and translate. Right now, to do that, I have to click the reverse language button, copy text, then click the translate button. I would like this to be done automatically, or done with one simple keyboard shortcut, for example tab.
These two small things make a lot of quality-of-life difference when you use he translation function hundred times every single day.