You could eliminate a few of the decals and still have a decent early war American decal sheet -
1) The armored division signs, the red yellow blue triangles with associated numbers. I don't remember seeing too many pictures of those on vehicles in combat.
2) The company decals, the yellow bar with small circle, 'A' thru 'I'
listed on your sheet,are all the same decals , just printed at different angles. You could just print ,for example, the decals 'D,E and F' ,and turn them at angles, or cut to make the ends shorter, if needed,
to use on the kit for different companys.
3) I've only seen pictures of the 'mailed fist with lightening bolts' insignia in color, not outlined in white. You could include the outlined in white fist , but you only need one of each, as I've only seen pictures of those painted on the upper hull, and have never seen more than one per tank.
Since you have to go back to the beginning on the sheet, could you make the names on Wardaddy, Honky Tonk and Dixie Bell in yellow instead of white? The 1/35th decal sets and color profiles that I have seen of M4A1's in North Africa are in yellow. Also,please add a yellow stripe to go around the turrets in the same yellow as the star insignia. Yellow decal sheets aren't always the same tint of yellow from different decal manufacturers. The yellow stars and stripes would probably have painted at the same time, from the same can of paint, so it would be nice if they were the same tint of yellow.
Thanks