The way it is now, it wouldn't work. what I'm saying though is that each class in battle mode should not be defined by its price alone.
each class needs to bring something that other classes don't. I don't know how you would go about balancing it. I think the idea of the class system is to try to enforce battlefield roles rather than just infantry, archer and cavalry, it tries to to give some variety if only a little. I think it would be good if there was more variety in gear choice among the classes, rather than just a 2 perk system, but not straying far from the classes assigned role, whatever that is.
well looks like I am wrong there then, they are basing it around gold, "TDM like"