The problems arise because the victory conditions introduce opposing geometry into the game. Units are all straight line squares and rectantangles but the defining victory condition is based on a circle. This creates measurement difficulties particularly when terrain is introduced (even more so if the centre point is in terrain.
Of all the scenarios this is the one where I see most disagreements/confusion/conflict during and after the game. This is because the centre generally becomes a scrum and accurate measuring is often difficult.
My suggested "fix" is to convert the 24" diameter circle into a 24" box. The box would be in the same place 12" from the centre but because you are not dealing with arcs you can measure the extent of the box from any table edge...on a 72" x 48" table the corner is 12" from the long edge and 24" from side edge.
This fix makes the determination of scoring units logistically far easier.
What are the effects? Well the victory "area" increases from 452 square inches to 572 square inches - a 27% increase. The victory area equates to one sixth of table area.
If you were concerned this was too much you can equalise the area with the current 452 square inches by decreasing the box to 21" square.
What do people think on this fix? Is it needed? Would it work better?