It is a useful codebase, and I can see how it can help certain use cases. The project has a lot of future potential by adding more components.
Pros:
Many of the modules that you may want to use are pre-coded for you.
Easy to understand and neatly organized.

Areas of Improvement:
I believe this work still remains in progress. The underlying framework reflex.dev is still new(er) as compared to some other more mature frameworks such as Django, Streamlit, Flask etc. What could set this project ahead is an online drag and drop web builder at PysaaS.
More modules need to be added. At present there are mostly basic modules.
The documentation needs to be updated and more usecases/example apps to be included.

So, overall, it does speed up the bootstrapping process, you will have to integrate your own modules by reading underlying framework's documentation since PySaaS's own document is not very elaborate.