I have a few ideas to improve the workflow and user experience, but I will submit them as separate ideas, one at a time.
Some one thought it was a good idea to have the sketch turn off, or become invisible automatically after you perform an operation like extrude for example. This must have been thought of as such a good idea that there was not even the option of not having the sketch turn off even when the user was not finished with sketch.
Each model I have made contains many parts and most sketches are needed for more than one operation so when I do the first operation the sketch closes and I have to find it and turn it back on. After chasing the sketch a thousand times to turn back on it gets more and more annoying especailly when you have lots of parts and lots of sketches. An option is needed in the preferences to allow the user to choose to turn off automatic closing of the sketch. Something like:

It's easy enough to turn sketches off when you are done with them so there is no reason to add the extra step of chasing after it to turn it on each time. I have looked at sample files that are provided with Fusion and see that many sketches have more than one sketch element.
What I suggest here should be easy to implement.
Please please please....