Q: Is it possible to focus on either RTS or RPG or will the player need to expand their strategy to encompass both?

A: The idea is that RPG and RTS components are equally important in the gameplay. On the one hand, you have an RPG character, which develops his skills, gains experience, takes up quests and interacts with the world. On the other hand, you cannot do much without your army. So, RPG and RTS are very closely connected here.