The focus of most discussion about these resolutions has focused on the effects of altering references to God as "Father" or Jesus as "Son". Those with a long enough memory will recall that the word "Brothers" or "Brethren" was changed to "Brothers and Sisters" in the readings from Scripture in an effort to appear more inclusive years ago. The current focus on the Godhead is an slip down the slope of revisionism because if the language of the Prayer Book is changed, the readings from scripture will have to be changed to use a "translation" that is equally inclusive.
But changing the Bible is not really what is behind the push for gender neutral language in the Prayer Book.
What is behind all of this is the desire to create an all inclusive marriage rite that will cover any possible gender combination one can make out of the LGBTQRS soup the zeitgeist has been cooking up over the past 50 years.
You see, to progressive Episcopalians, the march towards same-sex marriage rites has been painfully slow. Yes, they got "Blessings" of same-sex couples passed, but that is not enough in their eyes. They want their relationships to be deemed marriages, and their ceremonies must be totally equivalent and never leave the impression of a "separate but equal" type of marriage. The only way to do this is to re-write the marriage rite so that it includes every possible permutation and then, by virtue of being in the Prayer Book, same sex marriage becomes part of the "core doctrine" of the Episcopal Sect.
If it comes down to a floor fight at this or future General Conventions, the LGBTQRS will abandon their feminist allies in a heartbeat and let God continue to be called "Father", Jesus "Son", and the Holy Spirit can be called whatever they want in order to get the marriage rite changed so that there will full, in your face inclusion of their couplings for visitors coming to weddings held in Episcopal buildings to see and witness as they see the pronoun optional rubrics written in the Prayer Book, or on the screens, or in the service bulletins for the next fifty years... which is about as long as the Episcopal sect is expected to be around.