There were scenes that just for length purposes, and knowing that the attention span of kids is not great, don't make it much longer than about 90 minutes.
I also know that in the second movie, the sequel, Eric made some huge advances with the robot suit. That just made it even better. You put the suit on and moved your arms then the robot's arms would move in sync with yours.
In our story logic which we're making up, if we're saying he's alive, then like a quadriplegic who's in bed he can move his head and shoulders, but he can't move his arms. If he could just turn on that power to his legs and arms, the nerves could get through and he could walk.
I would do it today because the thing that appealed to me was not necessarily the mechanics of the robot, but it was his personality and how funny and charming he was.