New experimental version!
With the upgrade path fully developed and tested, I now feel confident enabling settings auto-restore - if GC-BTT detects existing settings on import, it will now automatically restore them for you.
This makes upgrading much easier - and it works with all GC-BTT versions back to 2.641, the current stable version, so everyone will be able to upgrade easily now 
Please give it a shot. Hopefully it just works!
GoldenChaos-BTT 3.172-2 (Experimental) Changelog
- [Imports and Upgrades] GC-BTT will now automatically restore your settings on import
- [Default Settings] Added GC-BTT Settings button to default menu bar button set
- [Settings] Fixed an issue where the Show Finder settings switch would not reflect the actual setting state when set to Off
- [Settings] Fixed an issue where the AirDrop settings switch would not reflect the actual setting state when set to Off
- [Settings] Removed broken "Always Show Now Playing Widget" and "Always Show Media Controls" options until they're working with the new conditional activation group structure
- [Calculator] Fixed an issue where Calculator would not launch on Mojave
- [Emoji Picker] The emoji picker will now stay open until you switch applications instead of closing after you select an emoji
- [System Information] The "time remaining" indicator is now formatted nicely
-
[System Information] CPU% now gets the correct number (thanks @Katertier!)
- But it's not formatted nicely
- In general, the System Information modal is still under construction
Notes for Testers
Please report on the success or failure of settings auto-restore. 
Download: GoldenChaos-BTT 3.172-2 (Experimental)
Download link not working? Try the GitHub mirror.