What exactly goes through the minds of a mecha designer when making a transformable robot? Is there a guide or something that outlines the dogs and don'ts? I've been looking online and there's too few resources on how to draw mecha or their design processes let alone ones with alternate modes.

>>23381937 (OP)
Use Lego like Shoji Kawamori.
https://www.youtube.com/watch?v=suCsM0t3jYE

certified drool slide thread
>>23380568
>>23381926
>>23381848