This is a general suggestion, as I'm not sure what the best way to implement this is.
Reddit subreddits sometimes have their own wikis, which often have a lot of very useful information. See, for example:
Those wikis are already indexed by Kagi, however, they show up in search results very rarely, so it's hard to discover those.
It would be nice to surface them somehow. Maybe you could uprank them or include in your custom index. Or maybe you could create a "Wikis" lens similar to the existing "Forums" one that shows Reddit wikis as well as other community wikis? (ie. game wikis, etc.)
One of the goals of Kagi is to help discover interesting and useful content that wouldn't be discoverable otherwise, and wikis like that are troves of such content. I think this would be very helpful.