Off the top of my head Christopher Schwarz has a new workbench book, the Anarchists Work Bench, about building a cheap Roubo with the PDF available for free.
Here is a link to the free download:
https://blog.lostartpress.com/wp-con...ne-2020_v5.pdf
How a person works should influence how their bench is designed. Putting a tool away immediately after use, then getting up to get it 15 minutes later when it is needed again isn't my style. That is my main reason for wanting a tool well. Putting tools away at the beginning or end of the day works for me.
My work in progress tends to also stay on my bench. Even when it is a dozen parts or more. That is also the reason for splitting the top. The project's pieces can be kept on the other side of the well.
One odd feature wanted is a face vise with a left handed orientation. On some occasions this has been advantageous.
That explains some of my design reasoning.
It may be none of the features planned for my bench fit in to your work methods or interest.
It may help to make a list of what functions you desire and how you want to accomplish them. Then design your bench to accmplish them efficiently.
jtk
"A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
- Sir Winston Churchill (1874-1965)