I guess the term game breaker is too tough, it is disappointing, I thought they would be available to combat the extra 44 divisions Japan gets.
I'm probably not communicating very well. These units are definitely available to combat the extra divisions that Japan gets, you just have to pay the points to do so, which is very easy to do. There are what, 15 extra divisions in the emergency reinforcements? Each one usually costs around 1,600 PP to buy out, for a total of 24,000 PP needed. However, they can all be bought out into unrestricted commands nested in the restricted command, which allow you to pay 1/4 the PP, so you really only need 6,000 PP. Focus Pacific gives the allied player 90 PP per day, which means that you can buy every single emergency reinforcement out by mid February of 1942. I would say that they are absolutely available to combat the extra divisions that Japan gets - by the end of December 41 it's very possible to have bought out several thousand AV worth of emergency reinforcements alone.
In any case, by the time that Japan makes a serious play for India, Australia, New Zealand or the West Coast, you will have had time to buy the reinforcements out and move them in position to defend.
While Japan is very, very strong in Focus Pacific, please don't overlook the many new ways that the allies have to counter them in this mod - there are plenty.
A difference of viewpoint. I look at it as I have 40 PPs per turn to buy these out, the other 50 are being used to do the things I would normally do, change commanders, buy out other restricted units, etc. so 6,000 PPs / 40 = 150 days or about 5 months. But like I said, when I read the description I was expecting them to be unrestricted, so I was disappointed to find out they were not.