This has nothing to do with removing the GUI. It is simply a longer flight duration, possibly 2 minuetes by default, wnen going to Mars, 1 for The Moon etc.. Once you pass the atmosphere y axis of the planet you are on (nod) you do what SpaceUnicorn said - freeze and have the background whizz past. That would happen in a 'travel dimension' where nothing happens. Sounds like explore space, it ISN'T. Timer to the GUI could work, but I know that people want to walk around in thier own rocket.
Longer flight duration when? The only time you fly at all is during launch. It would make absolutely no sense to increase launch times for this. Either there's some details about your idea that you're leaving out, or the longer flight times is a bad and poorly thought out idea.
I've already pointed out in your other thread (that you probably deleted) that the walking in the rocket idea won't work.
1) Launch is the only time there's any real flight.
2) Astronauts don't walk around during launch.
3) Launch isn't long enough to walk around or do anything worthwhile anyways.
PS: Stop deleting your threads whenever people disagree with your suggestion just so you can hide the fact that people disagreed with you and post the same ideas again. It's dishonest.