Lol, I answered you in the album not here XD.
I have added 1 more image, with a half way torso.
For the modular robot I have a master plan. I will model him normally and add an alternate animation were it lost his legs (morph animation he will loose them), also the model will have many more custom attachment points.
The idea is to make the arms, head and chest plate all attachments. (many body parts will need more than 1 attchment point). Then remove those parts from the model itself. So you can have a full robot with customizable parts.
Fighting the robot can loose 1 arm at a time, and even the legs and it will still crawl and continue fighting. For example right arm has the range weapon and left arm the melee one, then you can just trigger that when he looses an arm the related attack is disabled. Also when he looses the legs with triggers his speed is reduced.