So, with the latest update they added persistent slider settings so you can duplicate your last march more easily. I think while this is the right thinking it's as much hindrance as help.
What is really needed are user defined preset March compositions. Each commander sets up what he wants an occupying March or a gather to be comprised of, one for oil / energy, one for steel, one for food, possibly even t4 rss tile vs t5 or t6.
It really comes down to simply coding an interface that let's us define and name march then a screen that let's us pick one of our march objects.