Thanks for playing our game!
The balance of looking at the radar and the main screen was something we tried to deal with better, but I admit it is one of the weaker aspects. The Boss calling in was always planned as a counter to that, but I know I still end up looking too much at the radar as well. Something to think on for future iterations!
Once you reach 80% fuel at the end, you're meant to reach the 'escape vector' (or in other words, a certain distance from the black hole) before being able to activate the hyperdrive. We have this described in text at certain points, but I agree that for the future we need to do more to indicate this better.