My experience with Freeman's Assembling machine is that they explode. I place one down, it explodes, leaves a ghost, and then robots start placing them over and over, and before I can react another 10 has exploded. This isn't fun.
I go to the region where they can be built. And how do I figure out how big the region I can build them in is? Read the source code? No, place them down till they explode. Of course who remembers to turn of the personal roboport? Whops there's another 5 assemblers blowing up on the same spot placed down by robots. This isn't fun.
Lo and behold, what do I find. The region isn't square, but circular in shape. And thus the task of marking down where they can and cannot be placed is hours of fiddling instead of a minute or two placing down concrete in a square. This isn't fun.
And then after I spent an hour or so building a module production within the allowed circle using those fancy freeman assemblers, and then bring a train line down there with a loading and unloading station for green, red, and blue circuits. I finally get to marvel my work as the belts of chips feed into these freeman assemblers. Only to see them all explode a minute later. Wrong location for the recipe it said. This isn't fun.
The insidious ways these assemblers punish players is astounding. Having them explode when not placed within the invisible bounds of the allowed areas add nothing but frustration, having them explode only after you've built the supply line of materials to them is down right evil. Why are the bounds invisible? It's trivial to render them.
