My biggest problem with Kagi today is that due to the small column width of search results, titles of articles, names of videos, etc. often get heavily truncated. I would love to be able to customize the column width, or just make it so that a larger column width gets used on larger monitors so that the titles get truncated less often.
This is an especially large problem when you choose a larger text size as even more titles get truncated.
If I had this capability, I would change my text size to be a bit larger since it would make text nicer to read on large monitors while still preserving the full titles of articles.