Please add an option on the "website would like to access your location" menu: a "Custom..." button, and when you click it, you can enter coordinates for ANY location in the world that Orion will then tell the website.

This would be an awesome privacy feature in my opinion, and I am not aware of any browsers that currently let you do this. Privacy enthusiasts (and hopefully everyone else too!) would LOVE this.
Benefits:
- Setting a location nearby but not too close to your house would allow shopping websites, weather websites, search engines that are not Kagi, event-finding websites, etc., to get an approximate location from you, and you don't have to leak your home address.
- If a website does not actually need your location but is bugging you for it anyway, you could set your location to literally anywhere to protect your privacy.
- When using a VPN, you could set your location to within the country that your VPN tunnel is in to avoid giving away where you actually are.
New settings:
Settings > Privacy OR Settings > Websites > Location
Default "Custom" location: (people could set this to a nearby location if they are frequently asked for their location)
Description below it to explain that you can only paste coordinates there, provide example coordinates, and note that you can copy them from maps applications
(website wants to use your location)
"Custom..." button
When pressed, show a menu with an "Enter coordinates:" text box; default location in there if set
Same description below it as the other setting mentioned above
Why coordinates?
You can easily copy coordinates from any maps application, and it is so standard that most people know what coordinates are - and if not, it is easy to figure out.
Future improvement possibilities:
Add a map button and integrate with Kagi Maps to let users select a location intuitively (possibly only for Kagi and/or Orion+ subscribers)
Timezone spoofing would further improve privacy when using VPNs and would be a good complementary feature to this
TL;DR: Option to set a custom location that Orion provides to websites when they ask for permission to use your location.