Well, that would be part of why I think a distinct Warlord full class is so useful. Instead of having to try to squeeze both a "complex Fighter" concept and a "simple Fighter" concept into the same chassis, you fork out the complexity into a distinct class so that each one can live its best life. "Fighter" then becomes a range from ultra-simple (Champion), to semi-simple (I'm given to understand Rune Knight is fairly straightforward), to semi-complex (Battle Master and Eldritch Knight). "Warlord," or "Captain" or "Commando" or whatever it ends up getting called, thus spans the higher end of things, from semi-complex (I'd put Resourceful and "Lazylord" here--basic effects, nothing fancy) to fairly intricate (Bravura with its risk-reward tradeoffs, Tactical with its tricksy nature) to ultra-complex (Sapper engineering-type, Knight-Enchanter part-wizard magical strategist). Both can have ranges, but be comfortable in a low-complexity or high-complexity focus, with the middle-pointing subclasses of each starting to blur the line a little.