As a Unity game developer who has a lot of experience, I agree with the others. I can see how this is just another generic FPS that just uses different meshes and models.
I used to play of guards and thieves, and I played it a lot. However, you guys added too many premium classes. So, the people who didn't buy cannot enjoy the game, and people who want this game won't buy it because they think "Oh, it is too unfair".