I still think giving cheap five man squads arguably the best at weapons would be too much of a slap in the face to basically all allied armor. They would still have four kar98s and be 25mp to reinforce, making them way way better than zook riflemen or piat sections at basically everything, while still being cheaper.
I guess traditionally the Volks were meant to transition into anti-tank/filler melee squads mid game then late game your Obers were meant to be the dedicated inf fighting squads. But that all got pooped on when Lelic made the redesign of the entire team and gave the STG to the Volks and the Shrek to the Pios.
Really, if you haven't made huge mistakes by the time you get your T4; you should already have 3+ volks squads with good vet and STG making the 400+ man power investment in Obers totally pointless.
Probably this wont ever change until the roll Volks have changes or even Obers get their role changed in some way, both units occupy the same roll right now but one comes out late game with 0 vet, costs more and has less squad members.
Probably Volks need to go back to being anti tank in some way, like giving them double Shrek upgrade instead of STG and making the accuracy and damage a bit less to even it out; that way they won't be able to doom blob them because they wont be super effective, but effective enough to deal with over extended vehicles and inf squads. (or something I don't know, just thinking out loud).