Having played as a character making a measly 16 gold per tax I can tell you that it is not a fun situation. Any loses require you to beg for gold, often even to repair I needed to get a gold supplement. Battles are a whole lot less fun if you feel that your troops barely make a difference even being there. Everyone expects that Dukes and Lords will support larger units, the question is how much larger can they be before the lower characters are left feeling like useless filler for the armies.