Vlad I think it's a tough thing to figure out, and I do not envy you. I do have some thoughts, though.
Firstly, there is a fine line between making US app too hidden (which I think it is now), but also making it intuitive and natural to use (which I somewhat think it is now). I think it's nice that it's just its own separate app (I don't know how else it would be), though the way to get to that app is a bit too hard.
Secondly, I think Kagi is in this sort of in between phase where you have SOME AI stuff, but not enough to make a separate webpage highlighting them all, if that makes sense.
Though, with that said, now that you also have reverse image search, you are at the point where I think you could make a fantastic add-on (as seen here) combining all of them together.