The combat width is a problem in itself, no matter the size of the division, in my opinion, of course. I would like it much more if all units in combat fought together as a cohesive group, instead of one or two attacking divisions randomly attacking one defending division.
Also, it would be nice if the division designer lead players to build divisions that had the basic equipment they had in the war, such as line artillery, AT, AA, signals, logistics, hospitals, etc... Right now the division designer, for game purposes, makes the 20w and 40w designs without basic equipment a good choice.