I love the banneret as a concept, but I absolutely loathe the execution. The main problem of the original class is that Rallying Cry is not good until you reach higher levels and you only have one use of it, Royal Envoy feels more like a ribbon feature, and Bulwark is so specific in its trigger requirements that you may play an entire high level campaign and never successfully use it once.
With my rework, I tried to make the features more useful and their use more frequent, while also maintaining as much of the original concept as possible and striving to keep the class simple (without adding unnecessary stuff like a banner mechanic, warlord-like maneuvers or anything like that).
Art credits: Purple Knight by BryanSyme
Thanks a lot for the kind words!
Indomitable is actually referenced in the original Banneret feature (Bulwark), but it has such a contrived trigger requirement (you and an ally both failing the same mental saving throw) that you'll rarely if ever use it outside of white room scenarios. I just replaced it with giving inspiration, which fits the theme of a charismatic commander inspiring the troops, as well as having a much broader use in the actual game.
What's your Commander class? I checked your post history but I can only see your barbarian subclass.
Late response. Reason I haven't posted it is because I've been reworking parts of it I dislike, especially Rally and the subclasses, but there's an older version of it on the internets. I'm definitely keeping the directives though
Here's a preview