Nice, a well balanced choice tbh. A good mix of real and existing robots with already in-place game mechanics, i.e. inventory. I've seen enough real world drones of a decent size, even ones carrying weapons, from paintball guns to pistols and actual machine guns. That really is a thing, only catch irl is that they either have tethered power or really short flight times, but again that's an easy stretch for the game to make. Plus by this time period there could very well be much better batteries anyhow. So it's actually more realistic than not, well played.
One thing I would suggest, albeit non-critical, is to give it ducted fans instead of open blades. Not only more practical when flying indoors irl, otherwise merely bumping a wall would destroy it, and then there's the whole "flying blender" issue. I also imagine it would be easier to implement in the engine, as far as modeling and animation, but I'm just guessing on that part.
Looking forward to what you guys end up with, thanks for the reply Joel.