Quote Originally Posted by Orda Khan
Unlike the MP lobby, not all armies were made up of elite units
Amen to that. While it's a jest, it's possible that the desire for great units worsens the economic problems many players have.

Getting top-of-the-line units requires upgrades to top-of-the-line military buildings. Balancing an economy and going for great units is a tough act, frankly. Waiting for great units also makes for a long game, and all of RTW's economic problems compound with time.