It’s great to get lots of different suggestions
. My take on them:
Warrior Code – you are probably right that it is an SGL opportunity and a potentially tradable tech. Archers, I don’t care a lot about since our fate will rest on mounted units, but we need Warrior Code to build horsemen eventually. We may or may not have time for another tech before Pottery – based on your proposed build order we would, but we have to see what terrain our capital has before we can figure out what our build order should be. I think Warrior Code is worth considering, but it will really depend on how soon we want a granary based on our capital’s surroundings.
Alphabet to Mathematics – The Statue of Zeus is worth building, but there is no hurry to get to Mathematics. We have the Pyramids and a Palace as potential prebuilds, so we don’t need Mathematics until we are closing in on 300 shields (300 was the final decision, right?). Since 2 civs start with Alphabet, and we don't need it right away, I don’t think we want to research it first.
Early game plans – I think last game I was too concerned about an early attack (for example, I recommended we go with a 6-turn settler + warrior factory instead of a 4-turn settler factory for a while). We will have to see what we end up with for map size, but last game we had 4 civs on a small map with 60% water – the civs started so far apart that there was absolutely no danger of an early attack on a capital with any real force. Unless we cram 5 civs onto a tiny map, I think we will be OK with just warriors for a while instead of spearmen.
Longer term plans – sounds good, but it is very hard to plan ahead with humans. From what little MP experience I have, it seems you make friends with your neighbors first (you meet them first, after all). If we want a peaceful relationship with our neighbors, then it may tie our hands in dealing with the further civs. This is something that we will have to wing for a while depending on who we meet.
Worker trades – I seem to remember reading somewhere that slaves we get do not have the industrious trait. Someone can try to run tests, or I can try to hunt down the old threads where I think that, but if it is true, then we may not want to trade one for one. Of course, that is a long ways away anyway, since we won’t have unit costs until we are out of Despotism anyway.