Prewriting is a good practice. Writing it out is another one. Not a good practice is not knowing what your going to write about
The plot structure intrigues readers because it takes place over a long period of time.
Answer:
They are adding new things.
It is just an update.
So expect it to be closed for a while.
The understanding of the poem, as the way a poem is structured can change the meaning or how the reader understands it drastically.