I'm worried by the fact that we can run out of time in generating GAs, needed for the LCs.
I also think that with MI slavery is all but useful. The less in the new cities, which are so small to cannot be whipped. At least until Sushi. But surely Sushi gives its best with Caste, where you can run almost endless specialists of the chosen kind.
The new cities all have seafood, and all have their work boats built for them. Thus, a 1-pop Granary, 1-2 pop Forge, Lighthouse, then courthouse when Mining is spread, etc.
For old cities, there are a few which won't need to whip their factories or coal plants.
For the rest, 5-6 turns building the factory instead of 2 means 3-4 turns' loss of wealth/research.
Running out of time to pop GAs? I don't really understand. It will mostly happen right at the end anyway, when we choose some cities of size 25+ (maybe larger due to Sushi) to starve, working all artists. When we get lots of cities pulling several hundred GPP/turn, it doesn't take very long to pop a lot of great people in succession.