just wondering: its seems that the layout of the 170 and 400 is pretty much fixed. but TE wrote that they plan to sell individual modules as well. but where can you put those? they wouldnt fit in the 170 and 400, unless Im missing something. maybe they will sell empty cases for their 2u modules as well. being able to change layout and expand is the whole point of modular, otherwise synths with fixed architecture are always cheaper.
otherwise i would call these systems semimodular: you can patch them, but you cant change the layout or expand them.