First there is added weight with electronic gear and batteries are heavy and may not last as long as the trooper may like. There is also a chance of equipment failure, extra cost and of course information overload.
Wow, looking like Robo Cops. But they look very uncomfortable and it doesn't look like a soldier...But I mean if it has all those features that can protect even biochemical weapons, its pretty darn good.
But the question is, how will they pay for every single uniform and items for each and every soldiers?