So after reading through many of the posts in this thread, I came to a sort of muddy idea.
The hint seems to be pointing at "Locomotion" and possibly stairs. To me, this says rails, cargo and climbing. Others mentioned how it might be a mish-mash of some previous game components to create this one, so here's what I've got:
Stairs could mean anything really. It doesn't have to necessarily be exact stairs, it could be a series of steps that aren't exactly the same height from each other, and aren't even going in the same direction. This would be difficult to pull off in mass to create a field, but it's something to keep in mind when you think about stairs. Stairs have also been seen in other games, so it adds to the combination of things from the past theory.
Rails can be seen in the 1998 FRC game Ladder Logic (
http://en.wikipedia.org/wiki/Ladder_Logic). What if you have to climb up a staircase, or a column or anything really to put the game piece on a set of rails? Could be very interesting. The rails also tie directly back to the past year's game for transporting the game piece back onto the field. What if this year, it takes it off?
This brings me to the last part, I saw where people had mentioned "STAND by" and that made me think of Triple Play from 2005 (
http://en.wikipedia.org/wiki/Triple_Play_(FIRST)). I was a volunteer that year, and it was probably the scariest game to volunteer for in my opinion, especially if you were the "automated loader" person haha. But for this year's game, what if the human player for the teams was in the stand by box to catch the game piece? After they've got it, they probably have to do something more than just throw it back onto the field, but it's a thought.
Karibou -- I was looking through google images and came across the exact game hint picture (but reversed) when I did a search for Little Eva, so I imagine that the GDC grabbed it from there or another similar place.