One thing about Fast Workers is that you can move them two spaces (on flat land) and build something to get a full 2 moves + a build in the same turn. This is very a useful micromanagement tip for "saving worker turns."
Sans India, If I have to move my Worker over 2 non-roaded spaces, I'll move my worker 1 space, and build something, then cancel it immediately. Next turn I'll move it one space and build whatever I wanted. No loss of turns, with a free 1 turn of building. Fast Workers can exploit this type of Micromanagement far better than regular Workers.
They aren't close to being anything I would consider the worst UU. They are not situational, as I find moving onto a mountiantop and still being able to build a road or mine that same turn very handy.
Sans India, If I have to move my Worker over 2 non-roaded spaces, I'll move my worker 1 space, and build something, then cancel it immediately. Next turn I'll move it one space and build whatever I wanted. No loss of turns, with a free 1 turn of building. Fast Workers can exploit this type of Micromanagement far better than regular Workers.
They aren't close to being anything I would consider the worst UU. They are not situational, as I find moving onto a mountiantop and still being able to build a road or mine that same turn very handy.