So, in your opinion Mosby, do you think it's still possible to have a defensive line along a country's border that's able to stop enemy attacks. Or in other words, is it hard or easy to project an offensive force on enemy's weak spots? I mean, in HOI 2 the provinces were so big that almost all of them had 9 divisions, so exploiting enemy's weak spots wasn't really possible (as there weren't many weak spots). Now I'm seeing gaps in defenses here and there.
Now, I don't think this will be possible, not even if you outnumber your enemy. You will always need to create a 'defence in depth'. This because it has, due to the number of provinces and their size, become rather easy to mass superior numbers for an offensive. Which is a great thing IMHO. No longer a static front which you have to maintain but constant movement and seesaw battles.
For me this is one of the serious improvements of HOI3, perhaps even more as I tend to focus mainly on land combat instead of air and naval.