Tanks SHOULD be a MAJOR threat to infantry with no AT support.
You'd rather RNG insta wipes then consistent damage?
And I'm not talking about 40 DPS far either here.
20 far, 40 close with all MGs would do the trick, only issue that would need to be resolved is the scaling, cutting off some reload time into MG accuracy would be needed to counter act infantry rec acc vet.
I do like my main gun aoe yes. An mg skewed damage profile would make the tank more of a passive damage output source from a more dynamic one.
Just an example, as a rifle squad would close on a p4 for a eng crit, the movement over and through terrain would increase the changes of squad stacking and subsequent “RNG wipes”. I would argue you live by the sword, die by it. Use cover to close safely or roll the dice on the open charge. I feel a mg damage profile would reduce the decision to a simple health check. Sure the cannon might do a bit but the risk is severely diminished.