The devs seem to have found a way to make tech rushing quite difficult - if you want / need to fight a long war. I found I was down to about 80% research speed by late 1940 [playing Germany] - not a good place to be! Next time round I concentrated prewar on all the 'minor' techs - usually skill level 2 to 4 - and all those 0.3 / 0.5 / 0.7 increases start adding up. The knock-on effect is that you cant have everything you want (or are used to in vanilla Arma etc) as quickly as you like - personally I am enjoying the change of philosophy and the challenges it brings.
I agree here, plus just to add more to the pot on this subject, the Allies have 2 advantages prior to war in 1939:
1. They have Peacetime Industry with the +15% research, its quite huge for them and so far in 1941 the UK is at about 158% research (while me Germany is at 138%) 20% difference can add up a lot.
2. In early scenarios the Allies get another huge advantage of sharing tech blueprints. If you think having the research speed +15% is big get the blueprints and it will be done in no time provided the right team is researching it.
The Allies definately have edge on technology race if you want to call it that due to the 2 points listed above, but the Axis can get their share maybe not as much but I always trade all my techs to my Axis partners AI every game just in case they can actually save my butt if needed (usually not!).
Tech tree now boils down to what you really need to either defend or attack with no time constraints, only research time. Which actually is more true to history then previous vanilla HoI2 tech trees and the blasted penalties for researching early. I think if I had to pick my favorite tech tree prior to IC it would have been good old HoI1 with that horrible interface and massive techs you had to scroll through to find what you needed.
