The faceless massed hosts of Heaven? No, not really....
The most powerful argument of 'modernism' is probably its positive attitude to, its advocacy of, individuality. It's interesting how often the argument comes down this - and serious Christians nearly always seem to end up arguing against individuality and in favour of some kind of communalism, some kind of subordination of the individual to the group - or to God.
Now, this is wrong - I think we feel it is wrong, at a deep intuitive level (I certainly do).
Furthermore, mainstream modern materialist Leftism is in practice strongly anti-individual (ie. totalitarian); while Christianity requires an absolute agency of each individual.
But how did this confusion arise - with so many people, for so long, arguing on the wrong sides?
I think the root of The Problem is, as usual, metaphysical - it relates to mistaken fundamental assumptions of most Christians concerning reality. The particular assumption relates to incarnation, the embodiment of humans - how and when this happens...
I think most Christians start from an unspoken and unexamined assumption that all Men were - to put it crudely - stamped-out as identical incarnate souls (probably) at some point between conception and birth; and all differences have arisen since then. The (wrong) assumption that all of us started-out The Same, and that individual differences we observe in this world are an unfortunate consequence of mortal corruption - and so the supposed-aim is that (in resurrected post-mortal life) we ought-to end-up as again The Same. This is envisaged as being absorbed-into a uniformity - as when Heaven is pictured (usually mentally) in terms of massed and apparently-uniform hosts, choirs, worshippers, praisers, armies, obedient classes of persons.
(Yet, surely, this conceptualisation clashes absolutely with the life and teaching of Jesus in the Gospels?)
In contrast, my contention is that the incarnation of Men is fundamentally like that of Jesus Christ. It is accepted by most Christians that Jesus was alive (co-eternally with The Father) before he was incarnated on earth; and (as is standard doctrine for Mormons) I believe that the same applies to all Men.
If such a pre-mortal spirit existence is accepted for all Men, and not for Jesus only; then this harmonises easily with the understanding that we, each of us, always-were distinct individualities. We were each unique individuals from eternity, from before we were conceived or born - we were born as unique individuals - and that is our ultimate and divine destiny.
Our Christian God, the creator, does not want same-ness, does not want people to be identical with one another: the plan always was and remains that we are unique individuals who should live together in-love.
And this is why love must be central to Christianity - it is by love (as we may glimpse in the best mortal marriage, family or friendship) that different individuals may live, work, create together in harmony and with a mutually-reinforcing (synergistic) effect.
The original Problem for God was therefore (in a very simplified sense) how to create this reality in such a way that already unique individuals would - voluntarily, by choice, in knowledge, over Time - reach a situation in which all would create-together in a wholly-harmonious and mutually-reinforcing way.
God has no interest in making everybody the same, or subordinating the individual - except sometimes as a matter of temporary expediency during the long period of learning. But the primary nature and goal of God's reality is of individuals working towards a loving harmony of creation.
Therefore, I regard the modernist materialist advocacy of individuality as a perversion and distortion of what God really does want. And I regard the standard mainstream Christian opposition to this individuality as an error; induced by the temporary expediencies of what might be termed 'social policy' or 'church order' - which are important but not fundamental Christian Goods.