Thanks for the feedback. Currently we do not have a printed technology sheet. We just write the name of the technologies on flash cards and place a national control markers and chips to keep track of progress.
As for them being too involved, for a first-time player we disagree. We played with a couple people that had never played Axis and Allies, but after a single game of G40 (keep in mind this already entails 8+ hours of practice) and they were all ready to implement our house rules on the next game.
Our house rules started as a question of how can we re-work the existing research rules to encourage the use of all out of box units.
It was never our goal to have unique technologies/units for each nation. The work done by @The-Captain and company is more complex than what we attempted to do, so kudos to them as it looks like they did a terrific job developing their house rule expansion. We should give their rules a try one day.