Kagi Assistant web search menu shows all lenses, regardless of their disabled status in Lenses settings. I suggest hiding lenses that are disabled. This will remove clutter when trying to select my own lenses, because I don't use default lenses.
Note: I am aware about a similar feedback, but that feedback is for hiding lenses in Kagi Search options, while this feedback is about decluttering Kagi Assistant.
Refer to the attached image.

Default lenses take up 80% of visual space.