Even though Battlefront does a decent job of setting point values, one problem dividing the war neatly into three eras is the "early era" lists have trouble competing with "late era" lists because technology advanced so quickly during World War II. Pure 1942 lists frequently have trouble fighting outside of their theater in mid-war because of developments in 1943 which expanded the power of most of the major combatants, especially the Germans who introduced the Panther, the Ferdinand and a host of other new vehicles in time for the Kursk offensive. In Early War, the Soviets introduce the T-34 and KV series of tanks into broad service starting in 1941. In Late War, the expanded availability of high AT value Allied guns gives the later lists a lot more hitting power than their early to mid 1944 counterparts.
Is it time to look at breaking out the eras of Flames of War into more phases to allow for more even match-ups between forces? One thought would be:
1939-1940: EW (could perhaps be extended to all operations pre-Barbarossa)
1942-mid 1943 (pre-Kursk): MW
Late 1943 through mid-1944 (Jan through August): LW (through the Normandy-breakout and Bagration, but pre-Market Garden)
Mid 1944-1945: VLW
The advantage is it makes it easier to balance forces within the era, but there are several disadvantages as well. One is that it would be harder to have large tournaments as there would be a smaller pool of army lists. Additional sub-categories would also make it harder to find a pickup game as well. It also takes away from some of the inherent simplicity of the overall system, which is one of the hallmarks of the game.
Feel free to discuss below!