Leathaface
Emperor
If you're playing as Brazil this can come in handy. I only thought of builders contributing to Spaceports projects before. Carnival projects contribute Great Writer, Great Artists and Great Musicians points, plus Great Engineer and Great Merchants points. (though 50% less GE and GM points)
The only downside is the Royal Society requires a Tier 3 Government so you can't get it earlier. But still, using 6 charge builders to rush Carnival projects is a powerful combination.
The only downside is the Royal Society requires a Tier 3 Government so you can't get it earlier. But still, using 6 charge builders to rush Carnival projects is a powerful combination.