In MSFS’s World MAP you have these options:
With these options, you can only start your flight from the ground at an airport runway. The flight will also start with a fixed heading and altitude.
With FStarter you can start anywhere from the ground or above the ground, at any altitude, direction, and speed.
In addition, you set your own POIs, start from a defined POIs or over a list of all 3D cities or non-3D cities and a specific Airport traffic pattern entry to train and improve approaches and landings.
All without a need to restart via the World Map