So make the benchmark riflemen and adjust accordingly.
You can talk about grenadiers all day but clinging to the past doesn't help. Right now, adjusting cons and grenadiers is a much easier fix than adjusting literally everything else
And of the two, cons need a whole lot more attention, which is the point the patch has tried to address.
I think the issue lies within the fact that mainlines aren't the only element.
OP mainlines caused Panzergrenadiers and Stormtrooper to be useless, and saw more OP cqb squads as well like Rangers and Para to be introduced with durability to stand against mainlines.
Also, at a certain point such high letality becomes too much.
AND is not true that the direction taken is just using WFA mainlines as teamplate, because bren section got a dps reduction.
Same should be done for the other mainlines.