due to current technology, the movements of a mobile suit are severely limeted. the Land Walker like Billum speaks of, actually scoots. its because the shock of each footstep would litterally destroy the macine in a few paces. and the macine needs to beable to respond fast enough to keep its balance while walking. currently, working with the tech that we have now can only let a machine move so fast. and by fast i mean slow.
in space, however, a mobile suit could be better used along the lines of a mobile suits original purpose- construction. just like in the anime, a humanoid machine would be very useful in space for building things.
and to operate an MS like in the anime, that may be the greatest task of all. what less advanced UC-era, AC-era, CE-era, and the new 00 series make you take for granted is the complicated mechanisms in controling such a beast. my research (yes, research) has found that it is likely to control the finger movement with the handheld controls. there is ussually four buttons on the controls that the fingers are placed on, and i assume the ammount of pressure placed on each moves the assigned finger. but what about more advanced movements, like kicks, jumps, and more arm movements?
for this reason i think that the best way to control a MS similarly like gundam would be the use of a cockpit like that found in G Gundam, or the use of some form of phsycommu system like in advanced UC suits.