Maybe all the pieces do have repulsor jets and little palladium batteries.
Which brings me to a WTF concern I had when his malfunctioning suit lost power as he was getting to TN...since when does the movie IM's suit have a separate power supply that runs out of gas? I thought his suits were run by his palladium / IM2-ium chest piece? Even if they have separate power supplies that allow them to be operated remotely or worn by other people (as they clearly do), why couldn't he keep power going with his chest unit?
(Granted, this point will be moot in future films.)