Trim Stab. You aptly demonstrate the fallacy of the current F-35 narrative - in that it is all about stealth and high-end capability, whereas in reality it isn't. Stealth vastly increases survivability and lethality against all threats, from the very new to the very old, thereby granting unimpeded access and political choice. Therefore it is not a false-economy and will increasingly become the 'norm' for all fighters. Moreover, the sensors and fusion give SA and ISR which are again, not niche.
So, yes, I do see unilateral operations being undertaken, requiring F-35's capabilities.
I'm sorry I can't qualify my authority.