[Question] Playing as Knights Hospitaller, why is there no Age 3 Upgrade For Reformed Crusader Knights

Hello, when you play as a military order, you get Crusader Knights in the first age. Then in the second age you get a special tech upgrade to make them Reformed Crusader Knights. But then it stops there. No more flavor units, after that its just the same infantry and cavalry as everyone else. Shouldnt there be more tech upgrades until we at least reach the age where its all gun infantry?