The Hetzer on live is fine at 120 fuel, it's a really good unit to rush.
The new veterancy requirements will help it perform beyond its initial shock window, because it gets good veterancy bonuses.
Putting it at 80 fuel was really pushing its shock power, but ultimately we felt that Obers needed to come a little bit sooner and that it wasn't worth putting the Schwerer at 80 fuel just for the Hetzer, that people would maybe use in 1/10-1/20 matches, compared to Obers that might be used almost every match now.
Did you consider moving Obers to T0 and put them behind 2 setup trucks? Would open the play for going T1/T2 build. It would be OP before the patch becouse of command Panther call in but currently that problem is solved. Spliting T4 would still be a thing, just first stage would require more fuel. Split it more like 90/30 fuel. First access would give you possibility to build JP4 and doctrinal ostwind/hetzer.
In 1 way, it's not as good solution as the one presented in the mod for players who plans to build T1-T4 becouse it wouldn't be so temping rushing for obers but on the other hand would open a new form of getting obers earlier by getting only T1 and T2.