I don't know how the movement of the Prodigy compares to the original Tron stick.
I only have a Firetop Prodigy here, but I assume all the Prodigy sticks have similar movement. The action is pretty stiff, with a definate click when you trip the switches, and the throw is quite short. The original Tron sticks had a fairly loose, soft feel, with no switch noise, and a long-ish throw.
However, the Prodigy currently has a short handle, while the Tron stick had a much longer one. If you were to graft a Tron-type handle onto a Prodigy, the extra height would increase the effective throw, and soften the resistance due to the greater leverage. I believe I'd rather try to build a Tron stick from a Prodigy than from, say, a Super for just those reasons. A Super is already long-throw soft-resistance; add the extra height of a Tron handle, and it might be too much.