Infantry commander commander is better at dealing with Track/LeFH than calliopes so if people do not use infatry commander they do have little trouble dealing with truck and LeFH so moving TOT to another commander should cause any issues.
Vippers, in your ideal world how exactly is a USF supposed to counter an LEFH or even the trucks? If your opponent puts up his trucks, there should be an inherent risk of it dying. He should not get out of jail free cards for taking a risk. Infantry Company imo isn't really that good anymore, and forcing him to lock in that choice would require
A. That he KNOWS you are going Lefh artillery gun.
B. That he KNOWS you locked in a commander of that choice.
C. That the match and situation will play out to his advantage.
If he does not instantly lock in infantry company, he is not building sandbags nor using early game tools of that commander. If he did choose that commander he made the sacrifice of not having elite infantry/tanks for later on in the game. Also Also the major has to use planes to even spot the Lefh (using teammates should not be a discussion) and then drop 4 bars worth of munitions on it.
On the USF commanders
The problem with USF commanders now, is that they were made at a time when USF purposely had holes in their army or playstyle to balance out the advantages they had inherently.
They could not build mines/sandbags = Field Training
They had no mortar = Mortar Halftrack
They had no indirect Fire = Priest
So Infantry Company provided that. Airborne provided you with elite troops, scouts, and allowed you to "skip" trees.
Now with a lot of their strengths gutted and re-balanced their commanders (and faction) just feel weird to me. They don't serve any strategic choice that commanders should provide or playstyle changes (see my profile image for ostheer change in playstyle).
I guess the question should be asked is now that they are eradicating holes, is it ok for commmanders to offer diverse playstyles and flavor or are they just sprinkles on top of your faction? Like maybe I would like using a primary force of airborne with pathfinders(not feasible at current strengths and CP requirements) and have a whole playstyle around that. Probably too late in the games life cycle for that kind of changing faction playstyles.
If commanders are supposed to add "sprinkles", USF feels way too incomplete of a faction right now to add flavor to it. Some units straight up have no purpose and are not used, and some just contradict each other. Pretty telling that a large majority of the time going captain is utterly pointless when I felt LT/CAPT was an interesting choice back in the day.
PS: I think Ostheer has some really great commander designs.