I've heard some assertions from many siblings in Christ. One of this is like:
A - "God can only create new souls in this world, in its current state. He is waiting to reach the right number of souls before coming back."
Even if it is not always stated this way, many sentences of some siblings imply this belief.
But if we remember that the world is in the current state because of original sin, then A implies:
B - original sin was "necessary" to God for creating new souls and reaching the number of souls he wanted. (or necessary for other purposes)
An alternative to the above sentences A and B would be:
A2: - "God could create souls directly in Heaven or other dimensions, he has no need of the world in its current corrupted state for creating new souls and the only reasons we are here in the world in its corrupted state is original sin, chosen by men."
In this case, A2 is compatible with
B2 - original sin was NOT necessary, but a mistake.
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So to recap, A is compatible with B, but not with B2, because to state A and B2 makes no logical sense.
In the same way, A2 is compatible with B2 but not with B.
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What do you think? Are you more oriented on the "necessity" sentences (A,B), or the "mistake" sentences (A2,B2)?
Feel free to add alternatives and describe your position with more details!