GWX is really something.
I have been playing it for two days already and it differs from stock SHIII as the day from the night.
Moreover,what's is foremost pleasant it does improve framerate on my notebook,you know.
And as for SHIV,I am not even going to buy it.His own to each,I think,during World War II,the most powerfull submarine fleet was German Kriegsmarine,the most powerfull air force was USAF.Ubisoft should make a difference,what certain type of warfare matches each country best.