It's been a very long time since I've created a balance thread as I have been attempting to "get good" in 1 v 1's as Ostheer. My observation is that Grenadiers are overly micro intensive when compared to other front line infantry. In the past six months cover has changed, grenades have changed, the other factions front line infantry have changed but Gren's have remained a near constant. Oh, there was that minor correction two patches ago which hurt their performance.
Simply put, given the direction the game has taken I feel the time is now for Gren's to have a 5th model. The damage should remain the same but this one change would at least make the unit more survivable and easier for the not-top-10 players to use.
My frustration as of late has been the USF toss a grenade and retreat tactic. The timer on those nads are short which in my case leads to squad wiping, both in cover and out. An extra model may help ease this.
Rawr
Add on with something I should have spoken in more detail about.
While I would love to see grens turned into a 5-man squad, this change would actually require a NERF to overall grenadier squad DPS to keep balance. Currently the only reason conscripts can beat grenadiers is because of the fact that they have more men. At close range, a grenadier model has higher DPS than conscript DPS by quite an amount. Increasing gren squad size to 5 and spreading the DPS across all the models will make it impossible for a 5-man conscript squad to win the fight (losses taken from closing). Even a 6-man squad would have considerable troubles.
If you add a 5-th man, the grens need to have an overall lower DPS than than they had 4-men to make sure that the increased TTK (time to kill) for allied squads doesn't give the grens a much higher advantage, since they have better DPS.