This is exactly why it would be OP. Grenadiers do not lose their base dps with model drops when they are equiped with LMG. Having a 5th men means their main source of DPS last longer thus put them at the same level than Tommy/dual Bren or Riflemen/dual BAR while costing 240 and 60 munition and having superior support units around them and late game superior armor.
Grenadier problem is the high potentiality of 4men squad wipe on the late game. That's a problem damage design in COh2. Grenadiers were 4men squads on COH1 facing 6men squads rifle and squad wipe has never been such an issue, even knight cross holders were 3men squad and single shot squad wipe wasn't that much an issue, it could happen but that was pure bad luck. Here on COh2, units have been design for that purpose, like the brumbar, churchill Avre or Sturmtiger...
Grenadier do not need to be versatile, versatility is on T1 and T2 units combined arms.
nah..it is not like that the mg shredd infantery like double brens/ vickers...
the dmg from the lmg is ok..but grens are not like a glas canon...their dmg overall is meh...when you see that the must stay and must deal with 6 model squads
look the arranged vids where grens will be killed by nearly all infantery with upgrades