For easier navigation between adjacent systems please add the following GUI improvement:
Each phase lane has an arrow pointing towards the destination system that you can click so your view instantly zooms there. This arrow can be placed just outside the gravity well of the planet, but not too close to interfere with other stuff.
This makes navigating your camera from one place to another without moving your mouse too far much easier. It also leaves you less reliant on the less than responsive middle mouse button fast-zoom function.