ok
i just read an article in the scientific american about this. currently, they are working on prototypes for an exoskeleton suit, much like one would expect for a "primitive" mobile suit. they were talking about how useful it would, and the mechanics were easy, and how easy this one would be to operate.
the problem?
power. they haven't figured out an effecient power source for these things yet.
if they had, they said, they would have a working model already.
as it is, they are looking at working models in, say, three years.