Why not give Osttruppen the ability for sand-bags and wire without "trench-ability". Then "trench" can be replaced by an other ability. There are only two commanders with trenches, Osttruppen and Community-Defence.
Community-Defence could become:
-Osttruppen
-Ostwall (concrete Bunkers and tank-traps)
-StuG E
-Hull-Down
-Sector-Artillery
I was thinking why not overhaul the entire commander and give it a proper name rather than Defensive (Community); it just seems really lacking.
It could be called Hastened Fortifications Doctrine that features;
-Osttruppen
-Widerstreit's Ostwall Idea (features concrete bunkers that are a bit pricier than normal bunkers but have more HP and some Armor [replaces the normal bunker]; tank-traps and OKW's reinforced barbed wire [replaces normal barbed wire] and the Trench-Ability)
-StuG Ausf. E
-PaK 43 (that needs a reworking of its own)
-The New Sector Artillery
As much as I love the PaK 43; I really does need a rework. In some of the TOW missions that are co-op playable, such as Case Blue - Assault on Voronezh; it can be extremely powerful in choke points and can be when properly placed a great asset, but it needs fixing.
Because there are only two commanders with trench and bouth have Osttruppen the commander-ability is useless. Grenadiers can live without sand-bags if there are also Osttruppen.
-> Also that would boost Osttruppen on other Abilitys, like Relief-Infantry. With sand-bags and wire they become an usefull unit.
I would love to have the Osttruppen fill in as rapid response engineers as well as relief-infantry.