I know you said no more classes but I think you should add a hacker class for level 1 they could have low technology like limited use. For level 5 I was thinking about them hacking into some of the drones that the engineers have and can control tanks by hacking and to hack they need to click the red buttons instead of the green ones. There would be a screen of green ones then all of a sudden a red one pops up and they have 5 seconds to find it and tap it . so yeah that's my idea I hope you see this and reply