Why would that make a difference? Ostheer can't build allied halftracks. You could replace every allied halftrack with a wooden cart pulled by two goats and it wouldn't make a shred of difference to the 250's value relative to Ostheer's other options for spending that fuel and manpower.
250 is unique to Ostheer because it allows passengers to fire so you can't simply compare it with 251.
One has to compare with units with similar use. The unit is inferior to all allied HT and the Commander ability is simply UP.
Soviet commander with Guards, ISU and bombing strafe are laughing right now
That is what happens when take a faction with a specific design (mediocre stock good call-in) and buffs the weakness of that design without really nerfing the strong points.