not sure what you're implying here but last time i checked (which was quite a while ago, admittedly) radio net worked fine on any sherman that had it as their vet1 ability. and to my knowledge only the e8 (and maybe the dozer?) lost access to it in one of the recent patches, or did i miss sth here?
Listen man it use to put a symol above your tank when it had speed boost from radio net always had that until radionet left, it like allied blitkreig, it happened to every sherman with a vet one around it, also put one in the units portrait you tell me if its still there ok and if it is dosent work. They would also all shermans in range fire twice as fast thats why it was viable using shermans, you do me a favor and try flanking a jagt on almost any 4v4 map and i bet jagdt survives even if jt was a blind flank or they are incredibly stupid and didnt back its azz into a corner while snares and shreks take out all your tanks like candy
Thats why we allllllll use td spam only thing that CAN work maybe only if they made a mistake or epic teamwork call ins