There are several problems with trying to incorporate formation IQ and GPA.
1) The effects of formation IQ and GPA aren't really understood yet in the new engine, so it's hard to weight them properly. Although the same thing is fundamentally true with attributes - we're still learning what's important in the new engine - the approach to attributes isn't all that different from before.
2) I have no idea which formations you are going to use. Having to include all of the formations waters down the ratings too much. I suppose I could have a rating that includes only the IQ for one formation, thus leading to six different ratings for each position role - that's just overkill.
3) The utility that yatzr wrote for me doesn't pull that data right now anyway. While I'm sure he would be willing to re-write it so that it does pull the data, I don't know how much effort that would entail.