Just happened on this thread now and I really like the theories so far! One thing I’ve been thinking of as a potential 5th ideal is similar to what NickH mentioned above:
Thinking of the progression of ideals so far, it has been about protecting an expanding number of people within reasonable limits:
- first the weak
- then even people you hate
- and then accepting you might not be able to save everyone
The next step could be about bringing peace to the world / protecting peace over individuals (to save the biggest amount of people possible). This would also go thematically in line with non-lethal applications of windrunner powers but would not exclude violence when necessary. (Comparing this to the real world, they would aim to be something like police or peacekeepers)
Alternatively, maybe it could be something more abstract about the greater good? Something like ”I will protect the world”, which might mean you accept even big losses to protect everyone else.