The problem in HPS games is the penalty for staying in column isn't that severe. While its better to go to line, but if speed is more important column works just find. Especially in woods since the normal 50% bonus to the firer for Enfiladed fire (against column) is reduced by the Wood's -40%. While the melee is unaffected by woods or being in column. When you consider that melee will cause five times the damage as fire why bother to switch from column to line unless you don't want to melee? You take a small fire damage hit but get a 10% bonus for not having fired for the more important melee.
If the fire modifier was larger so it is severely penalized for using column then it could be left to the player whether he wants to pay the price. Right now the price isn't very high if the objective is a quick melee and there is an advantage to being able to use road movement to get more people into the melee, then it is the best formation to use.
This assumes you are using the optional Embedded Melee rule. If not, its Panzer Blitz time. Never go to line unless the unit is disrupted. First one to surround an army wins.
