Writing in the 21st century is both richly informed by what has been written and yet is amidst such a dynamic and emerging landscape.
Thankfully, we are not alone! Many companions and helpful resources are with us along our journey.
For example, a defense of the pre-mortem book review BEFORE the writing begins!
https://literary-arts.org/wp-content/uploads/2020/07/1.Literary-Arts10-Reasons-to-Write-a-Book-Proposal-BEFORE-Writing-the-Book.pdf