I have several different ideas for Ostheer that I think address a lot of the concerns with the faction atm, principally T4 and the Ostheer infantry game.
While I lean a bit towards Imperial Dane's view on the HMG42 being the cornerstone of the Ostheer infantry setup, and also then the source of most of it's difficulties, I think buffing the HMG42 in a significant way is probably not an entirely realistic prospect (I would be interested in reducing the RA for the starter HMG42 crew though, from 1.25 to 1.15 for a start, maybe.)
With this in mind, and considering the current issues with T4 not being worth the price or what-have-you, and also considering the relative fragility of Grenadiers, which is still a topic of discussion even after the RD change, I have an idea which addressed both the T4 and Gren issue simultaneously.
It's simple, have acquiring T4 grant a global buff to Grenadier reinforcement time and cost as well as experience gain via a requirement action in the squad sbps. Given that Ostheer is supposedly a primarily late-game faction, this allows quicker replacement and veterancy gain by Grenadiers in the late game, allowing them to more quickly catch up with enemy infantry even if suffering wipes. At the same time, this isn't a major combat buff, and so should hopefully not be seen as a particularly dangerous balance direction, merely a way to keep Ostheer mainline infantry relevant.
For reinforce cost and time I was thinking a 10% reduction in both areas, bringing Grenadier reinforce cost from 30 to 27 and time from 6 to 5.4. For experience gain I was thinking 15-25%.
On this same vein I also believe the squad population cap (sbps, not individual pop) for the Grenadier squad should be reduced from 3 to 2, the same as most other mainline infantry squads. Seeing as how Grenadiers are primarily a form of support infantry, this helps them better fulfil this role by eating up slightly less popcap, particularly in the lategame. For reference, a Grenadier squad of 4 men would currently use up 7 popcap, and in this case would only use 6.
If these changes are not sufficient with regard primarily to infantry (T4 is somewhat secondary in this idea tbh) I think any further changes should come to how the veterancy is dealt out rather than a stock combat buff (or the reinforcement cost change being considered right now, tbh).
EDIT: I should also say that, as with other infantry units with ability recharge veterancies, like riflemen, I think the ability recharge bonus should apply to all or at least most abilities in the squad, including doctrinal ones (blinding grenade, rifle grenade, sprint, etc.)
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