Maritime states getting nerfed is probably one of the greatest things ever. Hurts ICS bad and hits the Greeks, Aztecs, and Siam slightly too. We all should have seen this coming.
It hurts non-ICS too. The question is, will it make non-ICS more competitive relatively? In worst case scenario, it may actually make ICS more powerful relatively. An ICS empire has more gold and can compensate weaker Maritimes by buying multiple of them. Furthermore, an ICS empire doesn't need that much food since cities are small and grow fast.
Social policies being chosen on the turn they are acquired is fine. It destroys a few exploits used to bring about a cultural victory (giving away cities late game once xxxx culture has been accumilated comes to mind), weakens puppeting since a puppet city almost always builds culture buildings, and puts even more pressure on ICS timing. France, Siam, and the Aztecs will also feel the effects more than others.
What ICS timing? The major ICS strategy was going after Meritocracy in Liberty tree. This strategy won't take a hit at all, since Liberty-tree is unlocked from a start.
The progress will be a lot slower not only because of the policy restriction placed, but because maritime is getting nerfed too. 2 large blows to ICS player's speedy climb to victory.
