Now this will never happen there is too much history and tradition with the present insignia.
I'm not a good artist and my computer can't do it for me so I'll have to write them out.
The U.S. Army has recently decided to return to blue as the service uniform colour. This is a return to the frontier period and I for one like the idea. Another point that occurs to me is that almost every other english speaking country uses the British system for rank insignia. The U.S.Army in the nineteenth century itself used a similar system at least for NCO's. So here goes!!!
For E-1,E-2, and E-3, Specialist-4 - no insignia all level 1 soldiers
For E-5 - one chevron - level two soldier
For E-6 - two chevrons - level three soldier
For E- 7 - three chevrons - level four soldier
For E - 8 - three chevrons under or over the first sergeant's losenge
For E - 8 - Three chevrons with arc or tie Staff Sergeant
Both E-8's level five soldiers
For E - 9 - Three chevrons over or under a five pointed star
For E - 9 - Three chevrons over or under a star within wreath Command Sergeant Major
For E - 9 - Three chevrons over or under the American Eagle Crest
All E - 9's level six soldiers
Now I know that three chevrons under the star used to be either ordnance sergeant or colour sergeant but today we're using it for Sergeant Major.
I also considered using the thirteen star thirteen stripe shield to use as the British system uses the crown but that may be too much.
Use the shield as the crown for E-8 and the whole Eagle crest For E-9 , within a wreath for Command Sergeant Major,within a wreath over a star for Sergeant Major of the Army.
now officers.
O-1 -second lieutenant - 0ne five pointed star
O-2 -first lieutenant - two five pointed stars
O-3 - Captain - three stars
O-4 - Major - star on American Eagle (similar to General Staff Corps Insignia)
O- 5 - Lieutenant Colonel - star on Eagle plus one plain star
O- 6 - Colonel - star on Eagle plus two stars
General Officers
O-7 - Brigadier General crossed sword and baton
O-8 - Major General crossed baton and sword plus star
O-9 - Lieutenant General crossed baton and sword plus two stars
O-10 - General crossed baton and sword plus three stars
Please don't think I thought this out all by myself. I got most of my presentation here from a web site explaining the correct use of the British ranks system for police and the military. I liked the site and wanted to show it here as a hypothetical suggestion.