Soul marriage, or a 3-D sense of being human
One of the issues that now needs addressing is the theology of marriage - and in particular, the understanding based not on equality, which has a valuable but only horizontal understanding of what it is to be human; but the one based upon soul, which introduces depth and ultimately divinity into what it is to be human.
Notions of 'one flesh' and 'conjugal love' only really make sense with such a 3-D anthropology (without it they become legalistic and reifying) - the insight that bodies are the tangible manifestation of souls, which are themselves the created expression of the uncreated within us. Marriage is sacramental when two become one in soul, thereby incarnating the unity that is found in God.
The Greek Fathers understanding of eros will be crucial as well, and their insights into the desire that reaches for God, which is awoken and shared in human love too. This is about directing love in a vertical-divine as well as horizontal-human direction. It understands God's eros as well, which reaches down, as it were, as well as within.
We also need less of the complementary, biological-scientistic notion of gender difference (big since the 17th century) and a renewed notion that is more like the ancient, in which the human capacities culturally associated with masculinity and femininity are recognised as being fundamentally qualities of the soul, and so not rigidly tied to gender differences.