It's not a valid argument because you're shutting off your brain at the crucial bit. Armor advancements will always happen, but so will weapon advancements. At no point will armor become so advanced that weapons cannot ever penetrate it. Especially not when you're talking about "armor" and bullets that are fired via mass accelerator.
Looks like you're the one shutting off at the crucial bit; there will always be advancement, the point is that technology exists
now and has been in the works for quite a bit. Advancement always happens, or else everybody today would be wearing Kevlar and fighting with swords. Kevlar used to be the standard, until bullets were made to penetrate it, so they made new armor that should be out within a decade that actually stops bullets by using liquid to disperse it. That's what liquid armor does. So, yeah, I don't imagine they'd be using kevlar or even our latest technology. They would have advanced with their armor in the
future to compensate their for the advanced weaponry. I am not saying that they did, just that it is in the realm of possibility and the argument that "no one would wear that into battle because of bullets" doesn't always apply. Are you going to tell me with that kind of technology coupled with Kinect shields and biotic barriers wouldn't be enough protection? If you can't look inside the realm of possibilities to say, "there may be room in this to have these armors as an
option, then there is nothing more to really say to you in this discussion because you've already closed your mind to it and refuse to acknowledge anything other than your own . opinion and that makes me wonder if realism is really the bane for you when it comes to tighter fitting armor.
Hammerstorm: The reason they are developing this armor now is for the freedom of movement
without the bulk and offer more protection from projectiles. All I am saying is that it is possible to expect that between alien tech and human tech, it could be enough reason to justify tighter fitting armor--notice I didn't say revealing, but tighter fitting. I don't think Miranda's armor is revealing, just tight and I don't see anyone asking for Jack's armor.
As for asking why anyone would still chooe the bulkier armor, well reading this thread will tell you that there are plenty who like the aesthetic of it and would still choose it. That is what options are for. Same as weapons in games. Sometimes I avoid the most powerful weapon for a lesser one, if the weapon is too big and bulky.