[theCADguy]

Yes, this seems to be legal and is a pretty good idea. There is no rule against doing so. However, its probably better to develop a system that can collect and stack within or near the robot, due to the fact that the human player station takes some extra time (load the tote and open the gate), and because the human player station may be unreliable in creating stacks in this manner. Also, if you had a mechanism to do it, you could create larger stacks that are worth more points, and that can be topped off with a container and noodle.