In Sri Aurobindo's yoga the aim is not only the union of the soul with the Divine Mother but also of our nature with the Divine Force and Light and Power and Love and Wideness and Ananda.
Saraswati is the presiding goddess of the last of the four Ages of mankind, who prepares the world for the new cycle of Creation, Satya Yuga, the Age of Truth.
As many people, as many unique paths. If one is marked out for the yoga one will do it anywhere, whereas one not marked out for the yoga cannot do it anywhere.
One cannot replicate what happens in one person's life into another. That is the mistake that cults and religions do, by standardising the spiritual seeking and fixing methods and techniques.
Speaking of Lord's ability to avoid the complexities of progressive manifestation in creating His worlds - yes He can and indeed He does. All the typal planes of gods etc are created directly by Him.