Thanks for this interesting guide EBZ, I had some fun last night testing it out. While the speed at which you play is considerably different than mine, we have alot of the same goals/style. I'll share with you all here a few refinements of my own that may help you out a bit.
1) When you land that first colony ship, set that planet to produce a scout. This little bugger only costs 1 credit per turn in maintenance, and is well worth it. He allows you to streak around the map finding all the other majors While the Hero gobbles up eggs. Since you have found all majors before you do your first tech trade, you don't run the risk of trading to only part of them and having them retrade your tech to the others you haven't found.
2) When I did my first build cycle, I chose not to put all 5 of the specials on one planet (I had 6). The best planet did Manufacturing Capitol and 2 others, while the first 2 planets done with the que did the other 2 wonders. This saved me about 10 turns of wasted time, which in the early game is very significant.
3) When tech trading, I *always* add some influence onto the end of the trade. When you have reached the limit of the money your sucker, erm customer, will give you, they will always also add on some influence. We could start a whole nother thread on the importance of influence, and if people are curious then I will. (especially do this with minors, they give influence in shiploads and dont seem to care)
4) In mid game, when I have everyones economy utterly buried, I ask for a few freighters in one of the trades. This shaves a few credits off the trade, but not enough to notice, and you can immediately drive them to a planet to establish a route. They are randomly set to one of your own planets, and it doesn't matter which. Don't worry about the money you're giving the other guy, you'll just take it back in the next trade.
5) Be careful about building the influence wonders too soon, you can flip everyone mighty easy and you dont want to do that till you have your tech tree done
Once you have completely stalled the other guys economies, they aren't going to build them anyhow.
Again, thanks for sharing this info EBZ, while I am more of a micro person than a macro, I have enjoyed your method as well