Services are harder to debug due to lack of debugger to step through code.
This a standard component for programming / development in any IDE. Having this feature would reduce complexity of debugging code and make development faster.
An alternative solution to this problem is integrating composer with VS code so that editing a service opens a VS code window. Similar to how Unity is integrated with Visual studio. In Unity all UI development is done in Unity and writing code is done in visual studio.
This would be a more holistic approach that brings the best of both worlds in combining composer with a standard IDE to get a more robust development experience.