I've always only done observer person missions, because they don't require me to return anything, and they always come with coords stated in the info text. I know my ways around navigation, hence I can ultimately find 3 missions in Andromeda that are not too far from eachother, and make out the most effective route possible to prevent running back and forth.
Now with the 13.0 bug where observe person and item missions are broken, I've been trying to get assassinate missions, but they don't come with coords! Now that is just completely out of the question for me.
All missions should clearly state area, sub-area and coordinates!