As early game is usually where the least mistakes can be made, one particular thing that I'm interested in seeing is how TMIT manages to expand quickly enough to grab enough land when it is not possible to simply cut off a chokepoint to prevent the AI from expanding further. All his YouTube games seem to begin like that so far. Let's Play Justinian, for instance, simply requires blocking off the immediate north and south of the capital, and there's plenty of land to expand to. Another one of his series has him begin at the south end of a continent, and so he only has to block the north side.