OK drages so, i tough that , if you're going to do more classes you should start with the ceasans (Because they're the basics) and some new models for them, if possible you could make them like this:
- Ceasan Medic :Red suit with a white armor(Just to differentiate, because they're non-combatants, but they are different).
-Ceasan Engineer :A Black suit (Because he's been messing with the engines and other parts and they may leak something on them ,I don't know if they leak a liquid of another colour so... Use your imagination )
-Ceasan Reseacher : Green suit ( Maybe they're trying to watch us from afar, so we don't see them, they use green to camoflauge in the woods/grass)
Those are some basic ideas i'd tought, if it's possible to change some models for the new classes, these are my suggestions.
That's it, Paulo Out. There's a Alien Outpost wainting to be taken down .
P.S: Remember, these are only suggestions.