While it would be cool if Gemini/Gopher were more accessible, it would probably involve setting up a proxy on Kagi's site first for displaying the results - search results make no sense if all you get is an error message about an unknown protocol, when trying to open them, and might even be a net negative for Kagi as their search results appear buggy then.
Same for Small Web. From what I gathered, Small Web is mainly a side project and @Vlad would rather prefer if people submitted patches themselves: https://github.com/kagisearch/smallweb/
Maybe ask on Github whether they'd accept a Gemini/Gopher proxy patch for Smallweb first?