Rise Of Nations Beyond

As some might know, I am starting this project.
Here is some detail on the project.

Rise of Nations Beyond:
An aeon style map. Two nations fight for territory. They consist of two large sides. Each side has about five strongholds. When a stronghold is taken over, the opposing side begins to build there, making it their own. You help the two nations build as well, by helping their workers gather gold and lumber. If a worker is killed, another one is created to replace it, but will take time. You pick a base class, and then build upon that.
Example,
Fighter: Warrior, Crusader, Hell Warrior, etc. etc.
Mage: Ice Wizard, Fire Wizard, Lightning Wizard, etc. etc.
Archer: Ranger, Sniper, Axe Thrower, etc. etc.
You can then change class once again, into a master of a domain.

I did the hero class system, so a player can still choose from like 30 different heroes, and still be a well balanced game. Example: The mage class will change into three or four things, Lightning Mage, Ice Mage, Fire Mage, and so on, but can't go back to any of the regular classes. Then after you have gained enough experience with that class, you can then change into a master class. So say I picked the Ice Mage, you could then choose Ice Lord, or Ice Champion. Each class will take one skill from the previous class, and add in their own. So a Master Class will have two of the same abilities, and one new ability, and one ultimate.

I have made this thread just to show my: progress, screenshots, and I would like to get suggestions for some things.

It would be cool if I could get some suggestions of different types of classes, that are similar to their base class, example: Fighter turns into a Warrior, or a "put opinion here".

Thanks in advance.
~Azhag~

I think the hero system is too detailed, it puts too much emphasize on heroes, it's an RTS not an RPG

Anyone?

Maybe a defense/offence based Fighter. For Ex. Offence: Assasin. Defense: Gladiator.

It seems like you have the most common types of classes here, maybe renaming then so people got to try before they know what the classes do. Maybe a short description like diablo. Don't make to hero based, but don't make instant bulid and nuke weapons like RON did.