I agree, it is a very complex game... but that's only a reflection about how complex it could be in real life...
About Hearts of Iron II Doomsday: It adds intersting features to the previous game and fixes many instabilty bugs, wich is great. The idea of introduce spys was good, but i think more enphasys should have been given to spys during the game... the probabilties of getting your spys to attempt anything are just to few to be credible, i mean, how it is possible that having 5 spys working on enemy territory only gives you a probability of 3% to successfully kill an enemy minister..?
Another thing that should have been improved was the building times of the units, especialy naval... it takes an average time of 600 days do build a war vessel... I think there should be a tool to adjust how many industries you wanted to work on that particular unit, more industries would mean less time...
I have read many comments about how complex this game is... Well i think it is realistic, nation's management ain't easy so why should games, about this subject, be simple? If you like the subject you will find interesting and challenging to play and try to balance every aspect of your nation... If you don't like the subject, well... why did you bought the game?
It is such simple as this...
Greets!