When doing sketches in my parts, I like to include related geometry on one single sketch. Then share the sketch if needed when I make the different features, i.e, two different tapped hole sizes. Now in the machining environment, I can't share the sketch the same way. I have to start a new sketch and project geometry from one sketch to the new sketch.
Makes it difficult later to make changes because you have hunt to find what is controlling the dimensions.
Why NOT have the same workflow? This also makes it difficult for new users.