Anglican Church in North America apologists are keen to assert that the gay debate is merely a "symptom" of a broader rejection of "orthodox Christianity." When pressed as to what other doctrinal revisions have given offence, however, they are quite vague, yet they get huffy at the suggestion that their raison d'etre is homosexuality, almost as if they are sheepish about the unpalatability of their preoccupation with the domestic lives of their fellow Christians.
The most recent change before same-sex blessings was the ordination of women, and that was nearly 40 years ago, with a plethora of Continuing groups catering to the disaffected. When I pointed this out, a moderator at the Essentials blog protested that she wasn't even alive when TAC et. al. were formed! (I wasn't alive in 1534, but I managed to find my way to Anglicanism nonetheless).