I've always felt we rather missed a chance with Air Forces mostly inheriting unit structure from armies and thus having Generals and the like, and then the US Space Force in particular splitting off from the Air Fore and mostly just sticking with Air Force which is to say mostly Army ranks. I was suggesting jokingly someplace that the Space Force should have its flag ranks be "Starlord"....
.....Anyway, Marvel references aside but on a relatively similar level of seriousness, I also proposed that the Space Force should solve the Army vs Navy question of how important a Captain is by making them the most important rank in any new force: the equivalent of a sergeant, as the base rank for senior enlisted.