Uhmm...
HOI != EU/V/CK
there is no empire building/rebuilding. There is only a pre-game huddle, and then War. Then, only War. The HOI timeframe does not allow for any true nation building or shaping. No time to do anything truly ahistoric. This is why PDS is NOT calling this HOIV Grand Strategy Game. I think that's very intentional and appropriate.
Fairly certain they are calling the game a grand strategy game. Because, you know, it is.