I would like to see them make a "daisy chainable" esc setup where each unit could take 2s by itself, and plug into each other (i.e. small, shrinked boards) and combine them for larger duties. need more oomph, plug another one in to handle the cells.
What would really be the point other than complication and expense. There would be no simple way to do it and you would have to have a master slave type setup on the boards.
The MM Pro takes 2-6s and handles plenty of power for most every needed plus does brushed and brushless including sensored and sensorless. The size isn't that big. For dual setups the FXR and Micro Pros do a fine job.