Huh... I never thought of that option. I don't see why we couldn't do both. It could get a bit disjointed depending on how the focus shifts from mecha to armor and back are handled, but it could work. In that case, the mecha would be more or less like an exo-suit for the armor. The only major downside I can see here is that the powered armor would probably be treated as more of a last resort / stealthy alternative to the actual mecha, which would bring the mecha back into the forefront of any head-on battle. Just not sure how well that would all work together. Sticking with one or the other would give us more focus I think.
I assumed that the pilot suits interfaced with the seats or something in the last one. If we run mecha, it'd be a bit harder to really get intergrated like that unless we go with some sort of helmet-interface in the cockpit. And if we go that route, we could even do some sort of mental control of the mecha, having no need for a physical interface like a keyboard or joystick. With the armor, its a lot easier, just have the helmet of the suit have sensors that touch the head (or even "plug into" the head ala The Matrix) of the pilot.
That's one of the reasons I really like mecha. It gives warfare an almost impersonal feeling, but at the same time the implications of just what a pilot is doing can really come back to haunt them. Makes for some interesting character development. And like I pointed out last time, the armor makes it much more personal. Its like the difference between pulling the trigger of a sniper rifle and hacking someone in two with a sword. There's pluses and minuses to each, but the question is what sort of feel do you want to go for? Do you want to have the story keep the same sort of themes and development as the previous RP or do you want to go for a darker/more personal edge and see where that leads?
Or, if you think doing both would work, how would you balance it? Would there be a bigger focus on the armor or the mechas?
In reference to the humanity vs machine theme, what if cybernetic implants were required to interface fully with AMS-capable mechs/armor? So when you pilot a mecha/suit, you literally plug into it. Some people would see that as becoming one and the same with the machine. Going the armor route, that could even open such things as the pilot feeling physical pain when their suit gets damaged, as though it were their body. Going the mecha route, that could open things such as having a person capable of killing an entire city block with but a thought. Power like that has to get to you. Then there's the implications of impersonally killing people with the ease of thinking about it. Just some idea to think about.
I'll be re-using Kotomi either way, but I don't think I'll pull Beatrice and Theo back if we go the armor route. It just doesn't suit them. I've got another character or two in the works for the armor route.