I worked this way for many years, having 8 workspaces in a 2x4 grid for a long time where each workspace was "dedicated" to something. However, I have grown to really like gnome shell's dynamic workspaces.

I find that I have to multi-task on a lot of different things throughout the day, and often am getting interrupted before completing tasks. Each task gets its own workspace, and everything tied to that task (terminal, emacs, browser window with task specific tabs) is isolated there. When I complete the task, all windows are closed and that workspace goes away.

If I realize I need to work on another task, I create a new workspace, and drag the email message or a terminal with a short description of what I need to do. I go back and finish my other task first, but now there is a whole workspace set up for my next task. I find this can be a useful reminder of what tasks I am currently working on and what I still need to do.

Currently on my personal laptop, I have a workspace open with an email that I need to respond to. Another open with a browser window to the Google Play store since I need to update my personal apps before the targetSdk deadline on the 31st. Another open with emacs + a few browser tabs with documentation for a personal project. Another with a browser window for the county business license website, since I need to renew that this weekend.

I usually end up with 4-12 workspaces at any given time.