I have noticed that you cannot have two archer/matchlock units directly next to each other. The bright green surround seems to be what actually dictates how close these units can be to each other. When it should surely be the edge or widest part of the actual 'defensive/fence'.
This leaves a horrible 6-man wide gap that enemy troops can pour through.
I would like to see these green surrounds lessened in size, to equal the width of the actual fence.
Then we could have units side by side with no silly gaps.