I don’t like to say I want something or point out a problem without a solution. Some ideas for more depth that wouldn’t be to hard to implement are: gun specialization at the end of the trees people could pick a gun type to specialize in giving damage bonuses etc. another easy one is racial bonuses I.E Humans get a bonus to recovery from human spirit. The robots get a bonus to resilience and the awakened get a bonus to mobility or let people pick the bonus they want. Simple stuff makes people happy. Those are small ideas. But simple to implement.