Actually the reason why the French/British couldn't attack the siegfried line was because the Germans won so fast in Poland that the Anglo-Franco alliance hadn't enough time to mobilize yet.
But the thing is I want the war to draw out past 1941 so thus I want France to lose.
Also, a rule just occured to me, only take over the control of a "minor" power, don't take over the military of a "major" power, for example, if Britain don't take control of france or Poland.
Also, I did have a game where I had the farsight to build up the siegfried line which is only level 3 forts. if level 8 the usual garrison placed can do whatever it wants and the Brits and French wouldn't be able to do anything.
Now the Maginot line has 4 province to extend over, that is 20 IC and possible the bulk of your 1936-1940 time to build until 1938 advance construction tech.
Also thats 20 IC, with a country with only a around 40-60 for most of the game until war time you probly won't have 20 IC to waste on forts.
But in either case, the powers I think we should be would be USA, UK, SSSR, Nationalist China (until I can figure out why I can't get another china's troops as ComChi).
If we could get a game going where we could get 5 people then instead of being USSR I'ld be Germany. But if we have 4 or less I'll be USSR. We should have a USA/UK.
Also Gollevainen, a big part of Hoi2 that comes with practice is choosing the right techs, I almost never go down the strategic bomber path for one, and sometimes I dont go down the naval doctrines.
Also try to research stuff that is only 1 year ahead with as many of those "boxes" in your tech team lighted up since each one is a bonus to your tech research.
What should be concentrated on, is Industrial research (for IC bonus) construction (to unlock the assembly lines), the computer techs such as encyption/decryption encyption makes it harder for your enemy to figure out how many troops you have, decryption makes it easier to break the enemy codes and figure out how many troops THEY have.
Also they're a penalty if you research techs that are too far away, for example don't research 1940 tech if its only 1937 if they'res a 1938/37 tech availiable. you get more done this way.