I would love if Orion implemented some sort of a popup similar to Arc's find dialog that turns into AI prompt if there are no results and you press enter. The AI then takes the contents of the currently open webpage, runs your prompt on that data, and returns response in a popup, where you can ask additional questions, or easily close it up with an Esc key.
You could integrate this with Kagi's AI features (Ultimate users I guess), but if a user doesn't have a suitable Kagi subscription, you could offer an alternative, to enter your own OpenAI API key, and it would run off that.
Right know Kagi has a summarizer, which takes the URL of the currently open webpage, and summarizes that up. But the problem is that you cannot ask additional questions on top of that.
Additional issue is that if the site has a restricted access, summarizer will fail.
I really like the way Arc has implemented their popup, here is an example:
They have an additional feature, when you click on "Find on page" link, it scrolls to the quoted text and highlights it on the page, but this is just candy on the top.
Personally I really dislike the sidebars for this, a popup over the page feels more convenient, and doesn't change the width of the content.