I love that doctrine. Valiant assault is amazing, stuka assault is good if you know how the ability works exactly, you got a fast smoke drop recon plane which is always useful, and sometimes even the sturmpio fortifications are somewhat useful (fast flak emplacement is niche but can sometimes work, trench for raketenwerfer in lategame to prevent it from getting stolen etc)
The only truly underwhelming ability is the fallschirmjagers but they are not completely horrible.
