By version 1.5.4, many of the initial bugs from the DLC launch were ironed out. Players at this time focused heavily on abilities—like force attack or extra ground crews—and the newly added Acclimatization mechanic, which forced divisions to slowly adapt to extreme heat or cold. Impact on Strategy Decisions
Introduced a "pick-and-choose" system for commander abilities, allowing for specialized "Panzer Leaders" or "Infantry Experts". File: Hearts of Iron IV Waking the Tiger v1.54 ...
: Major powers received overhauled trees. Most notably, Germany gained the ability to depose Hitler and restore the Kaiser or pursue a democratic path, while Japan could go Communist or Democratic. By version 1