I don't see how Assault Tommies are going to be a viable option when they aren't even better than Assault Grenadiers and come in a mediocre doctrine. Meanwhile Ass-Grens come with Tigers.
This doctrine is not bad but only good for early game.
Of course without heavy tank, offmap or lategame arty this doctrine will always be unpopular but still fun.
If u ask me i would change repair ability to slow offmap that kills howitzers. Repair ability stick to british wolverine. And then you have commander that is viable for all mods.