Synod Document Based on Evangelii Gaudium?

I've followed the Synod as closely as time permits, which is to say I've no doubt missed a lot.


One of the things that seems odd to me is the proposal by the more progressive groups to structure the final document of the Synod on the Pope's letter from a couple of years ago - Evangelii Gaudium (The Joy of the Gospel).


If the Synod were on the new evangelization, this proposal would make sense to me.


But "family" is only mentioned 11 times throughout the 288 paragraphs of Evangelii Gaudium.


Aren't there a lot of good things written EXPLICITLY ABOUT THE FAMILY over the past few years that this Synod could utilize as a framework, vs. a letter on evangelization?


But perhaps those making the suggestion that the Synod's final document be based on a letter the Pope wrote two years ago about evangelization are actually not wanting to structure the Synod document around anything the Church has ever taught before?