It is an implicit requirement, that allways the last no button connection is the display control. 
It is also requirement for using the default options that a left button connection is established before the display connection. 
It is possible to use a different order, but then you can't rely on the default option and you have to out them back in the skin. 

If we ditch the backward compatibility, (what i don't to do want) we can change this. But IMHO it is not worth the work.