ISU doesn't 3 hit mediums from range 100 or whatever. ISU is great and absolutely erases infantry but a) it doesn't get shot at by pack howies which is literally the only reason I didn't mention it b) elefant and jagtiger basically hardcounter it the same way jackson hardcounters PIVs so it's more manageable.
isu has same range as elefant and u know how much is 240 x 3 right ?
U can flank a jt with a t 70 and kill it, try that with lunch or even puma vs Jackson
Btw I do agree with shadow proposal