IMO the main problem with OST infantry is its Survivability, not its DPS, specially Grens and PGrens. Currently there are a lot of allied tanks and explotion like weapons that insta wipe 2 or 3 models.
That is true and I am quite well aware of that fact. It has been discussed about grens many times and many are not in favour of increasing their overall survivability. Which is quite frankly, unfortunate.
Maybe firepower is a compensation instead for the increased likelihood of losing grens. Maybe increase cost to 250 in the process.
There is no clear resolution regarding grens or their overall survivability. Wehr units are prone or most likely to lose their squads to explosives in contrast to other factions.
Maybe they should have a modifier which decreases the likelihood of them losing squads or damage reduction to explosives specifically. That sort I suppose would resolve the situation. Other than that, that is all I can think of thus far.